index	prediction
0	If she has a dog, it must be the case that she has a mammal.
1	She doesn't have a chihuahua, so she doesn't have a dog.
2	She doesn't have a dog, so she doesn't have a mammal.
3	If she has a chihuahua, it must be the case that she has a dog.
4	If she has a chihuahua, then she has a cat.
5	If she has a chihuahua, then she doesn't have a cat.
6	The girl has a dog, therefore the girl has a poodle.
7	If the girl doesn't have a dog, then the girl doesn't have a poodle.
8	If the girl doesn't have a dog, it must be the case that the girl doesn't have a mammal.
9	If the girl has a poodle, it must be the case that the girl has a dog.
10	The girl has a poodle, therefore the girl has a dog.
11	If the girl has a poodle, it must be the case that the girl doesn't have a cat.
12	If David has a dog, that means David has a poodle.
13	David doesn't have a poodle, so David doesn't have a dog.
14	If David doesn't have a dog, then David doesn't have a poodle.
15	David has a dog, so David has a poodle.
16	If David has a poodle, that means David has a cat.
17	If David has a poodle, that means David doesn't have a cat.
18	He has a dog, therefore he has a mammal.
19	If he doesn't have a dog, that means he doesn't have a poodle.
20	He doesn't have a dog, therefore he doesn't have a mammal.
21	If he has a dog, it must be the case that he has a poodle.
22	If he has a poodle, that means he has a cat.
23	He has a poodle, therefore he doesn't have a cat.
24	He has a dog, therefore he has a pit bull.
25	If he doesn't have a pit bull, then he doesn't have a dog.
26	He doesn't have a dog, therefore he doesn't have a pit bull.
27	If he has a dog, that means he has a pit bull.
28	If he has a pit bull, then he has a cat.
29	If he has a pit bull, then he doesn't have a cat.
30	David has a dog, therefore David has a mammal.
31	David doesn't have a dog, therefore David doesn't have a mammal.
32	If she has a dog, it must be the case that she has a mammal.
33	She doesn't have a dog, therefore she doesn't have a mammal.
34	The boy has a dog, therefore the boy has a poodle.
35	The boy doesn't have a dog, therefore the boy doesn't have a poodle.
36	If the boy doesn't have a dog, it must be the case that the boy doesn't have a mammal.
37	The boy has a dog, therefore the boy has a poodle.
38	The boy has a poodle, so the boy has a dog.
39	The boy has a poodle, so the boy doesn't have a cat.
40	If David has a dog, that means David has a pit bull.
41	David doesn't have a pit bull, therefore David doesn't have a dog.
42	David doesn't have a dog, so David doesn't have a pit bull.
43	If David has a pit bull, it must be the case that David has a dog.
44	David has a pit bull, so David has a cat.
45	David has a pit bull, therefore David doesn't have a cat.
46	If he has a dog, that means he has a mammal.
47	If he doesn't have a chihuahua, it must be the case that he doesn't have a dog.
48	If he doesn't have a dog, that means he doesn't have a mammal.
49	If he has a dog, it must be the case that he has a chihuahua.
50	He has a chihuahua, so he has a cat.
51	He has a chihuahua, so he doesn't have a cat.
52	The girl has a dog, therefore the girl has a mammal.
53	The girl doesn't have a dog, so the girl doesn't have a mammal.
54	If David has a dog, it must be the case that David has a mammal.
55	If David doesn't have a chihuahua, then David doesn't have a dog.
56	If David doesn't have a dog, that means David doesn't have a mammal.
57	If David has a dog, then David has a chihuahua.
58	David has a chihuahua, so David has a cat.
59	David has a chihuahua, therefore David doesn't have a cat.
60	If he built a house, that means he built a building.
61	If he didn't build a mansion, then he didn't build a house.
62	If he didn't build a house, it must be the case that he didn't build a building.
63	If he built a house, then he built a mansion.
64	If he built a mansion, then he built a house.
65	If he built a mansion, then he didn't build a church.
66	If she built a house, then she built a building.
67	She didn't build a house, so she didn't build a mansion.
68	If she didn't build a house, it must be the case that she didn't build a building.
69	If she built a mansion, that means she built a house.
70	She built a mansion, so she built a church.
71	If she built a mansion, it must be the case that she didn't build a house.
72	The contractor built a house, therefore the contractor built a building.
73	If the contractor didn't build a mansion, it must be the case that the contractor didn't build a house.
74	The contractor didn't build a house, therefore the contractor didn't build a building.
75	If the contractor built a mansion, then the contractor built a house.
76	If the contractor built a mansion, then the contractor built a house.
77	The contractor built a mansion, therefore the contractor didn't build a church.
78	If the construction company built a house, that means the construction company built a building.
79	If the construction company didn't build a house, then the construction company didn't build a mansion.
80	If the construction company didn't build a house, then the construction company didn't build a building.
81	If the construction company built a house, it must be the case that the construction company built a mansion.
82	If the construction company built a mansion, that means the construction company built a church.
83	The construction company built a mansion, so the construction company didn't build a church.
84	If he built a house, it must be the case that he built a building.
85	If he didn't build a cottage, then he didn't build a house.
86	He didn't build a house, so he didn't build a building.
87	If he built a house, that means he built a cottage.
88	If he built a cottage, that means he built a church.
89	If he built a cottage, that means he didn't build a church.
90	If she built a house, it must be the case that she built a building.
91	If she didn't build a cottage, it must be the case that she didn't build a house.
92	If she didn't build a house, that means she didn't build a building.
93	If she built a cottage, that means she built a house.
94	She built a cottage, therefore she built a house.
95	She built a cottage, so she didn't build a house.
96	If the contractor built a house, it must be the case that the contractor built a building.
97	If the contractor didn't build a cottage, that means the contractor didn't build a house.
98	The contractor didn't build a house, so the contractor didn't build a building.
99	If the contractor built a cottage, that means the contractor built a house.
100	If the contractor built a cottage, that means the contractor built a church.
101	The contractor built a cottage, so the contractor didn't build a church.
102	If the construction company built a house, then the construction company built a building.
103	The construction company didn't build a house, therefore the construction company didn't build a cottage.
104	The construction company didn't build a house, so the construction company didn't build a building.
105	If the construction company built a house, it must be the case that the construction company built a cottage.
106	The construction company built a cottage, therefore the construction company built a house.
107	The construction company built a cottage, so the construction company didn't build a house.
108	If he is wearing pants, that means he is wearing clothing.
109	He is wearing pants, so he is wearing jeans.
110	If he is wearing jeans, then he is wearing socks.
111	If she is wearing pants, it must be the case that she is wearing clothing.
112	She is wearing pants, so she is wearing jeans.
113	If she is wearing jeans, then she is wearing pants.
114	The boy is wearing pants, so the boy is wearing clothing.
115	If the boy is wearing pants, then the boy is wearing jeans.
116	If the boy is wearing jeans, it must be the case that the boy is wearing pants.
117	The girl is wearing pants, therefore the girl is wearing clothing.
118	The girl is wearing jeans, so the girl is wearing pants.
119	If the girl is wearing jeans, it must be the case that the girl is wearing pants.
120	She is chopping a pepper, therefore she is chopping a chili.
121	If she isn't chopping a pepper, it must be the case that she isn't chopping a chili.
122	The chef is chopping a pepper, so the chef is chopping a chili.
123	The chef isn't chopping a pepper, therefore the chef isn't chopping a chili.
124	If the cook is chopping a pepper, that means the cook is chopping a chili.
125	If the cook isn't chopping a pepper, that means the cook isn't chopping a chili.
126	If he is chopping a pepper, that means he is chopping a chili.
127	He isn't chopping a pepper, therefore he isn't chopping a chili.
128	The speaker is playing a song, therefore the speaker is playing a ballad.
129	The speaker isn't playing a ballad, so the speaker isn't playing a song.
130	The speaker isn't playing a song, so the speaker isn't playing a ballad.
131	If the speaker is playing a song, that means the speaker is playing a ballad.
132	The speaker is playing a ballad, therefore the speaker is playing a song.
133	The speaker is playing a ballad, so the speaker isn't playing a song.
134	He is playing a song, so he is playing an anthem.
135	If he isn't playing an anthem, it must be the case that he isn't playing a song.
136	If he isn't playing a song, then he isn't playing an anthem.
137	He is playing a song, therefore he is playing an anthem.
138	He is playing an anthem, therefore he is playing a song.
139	He is playing an anthem, therefore he isn't playing a song.
140	She is playing a song, so she is playing an anthem.
141	If she isn't playing an anthem, it must be the case that she isn't playing a song.
142	If she isn't playing a song, it must be the case that she isn't playing an anthem.
143	If she is playing a song, it must be the case that she is playing an anthem.
144	If she is playing an anthem, it must be the case that she is playing a song.
145	If she is playing an anthem, then she isn't playing a song.
146	She is playing a song, therefore she is playing a ballad.
147	She isn't playing a ballad, therefore she isn't playing a song.
148	If she isn't playing a song, then she isn't playing a ballad.
149	If she is playing a song, then she is playing a ballad.
150	She is playing a ballad, therefore she is playing a song.
151	She is playing a ballad, therefore she isn't playing a song.
152	If the musician is playing a song, then the musician is playing an anthem.
153	If the musician isn't playing an anthem, it must be the case that the musician isn't playing a song.
154	If the musician isn't playing a song, it must be the case that the musician isn't playing an anthem.
155	The musician is playing a song, therefore the musician is playing an anthem.
156	If the musician is playing an anthem, then the musician is playing a song.
157	If the musician is playing an anthem, it must be the case that the musician isn't playing a song.
158	If he is playing a song, then he is playing a ballad.
159	If he isn't playing a song, it must be the case that he isn't playing a ballad.
160	He isn't playing a song, so he isn't playing a musical piece.
161	He is playing a ballad, therefore he is playing a song.
162	If he is playing a ballad, that means he is playing a song.
163	If he is playing a ballad, then he isn't playing a song.
164	If the musician is playing a song, that means the musician is playing a ballad.
165	If the musician isn't playing a song, then the musician isn't playing a ballad.
166	The musician isn't playing a song, so the musician isn't playing a ballad.
167	If the musician is playing a song, that means the musician is playing a ballad.
168	If the musician is playing a ballad, that means the musician is playing a song.
169	If the musician is playing a ballad, then the musician isn't playing a song.
170	The speaker is playing a song, therefore the speaker is playing an anthem.
171	The speaker isn't playing an anthem, therefore the speaker isn't playing a song.
172	If the speaker isn't playing a song, that means the speaker isn't playing an anthem.
173	The speaker is playing an anthem, therefore the speaker is playing a song.
174	The speaker is playing an anthem, therefore the speaker is playing a song.
175	If the speaker is playing an anthem, then the speaker isn't playing a song.
176	If he is growing herbs, then he is growing plants.
177	If he isn't growing herbs, that means he isn't growing basil.
178	If he isn't growing herbs, that means he isn't growing plants.
179	If he is growing basil, that means he is growing herbs.
180	If he is growing basil, then he is growing flowers.
181	He is growing basil, therefore he isn't growing flowers.
182	If the farm is growing herbs, it must be the case that the farm is growing plants.
183	If the farm isn't growing basil, it must be the case that the farm isn't growing herbs.
184	If the farm isn't growing herbs, that means the farm isn't growing plants.
185	The farm is growing basil, so the farm is growing herbs.
186	If the farm is growing basil, that means the farm is growing flowers.
187	If the farm is growing basil, that means the farm isn't growing flowers.
188	If she is growing herbs, then she is growing plants.
189	If she isn't growing herbs, that means she isn't growing rosemary.
190	She isn't growing herbs, so she isn't growing plants.
191	If she is growing herbs, it must be the case that she is growing rosemary.
192	She is growing rosemary, so she is growing flowers.
193	If she is growing rosemary, then she isn't growing flowers.
194	She is growing herbs, so she is growing plants.
195	If she isn't growing herbs, it must be the case that she isn't growing basil.
196	She isn't growing herbs, so she isn't growing plants.
197	She is growing basil, therefore she is growing herbs.
198	If she is growing basil, then she is growing flowers.
199	If she is growing basil, then she isn't growing flowers.
200	The farm is growing herbs, therefore the farm is growing plants.
201	If the farm isn't growing rosemary, that means the farm isn't growing herbs.
202	If the farm isn't growing herbs, that means the farm isn't growing plants.
203	The farm is growing rosemary, therefore the farm is growing herbs.
204	If the farm is growing rosemary, then the farm is growing flowers.
205	If the farm is growing rosemary, then the farm isn't growing flowers.
206	He is growing herbs, therefore he is growing plants.
207	If he isn't growing herbs, it must be the case that he isn't growing rosemary.
208	If he isn't growing herbs, then he isn't growing plants.
209	He is growing herbs, therefore he is growing rosemary.
210	If he is growing rosemary, then he is growing flowers.
211	He is growing rosemary, therefore he isn't growing flowers.
212	If the gardener is growing herbs, it must be the case that the gardener is growing plants.
213	The gardener isn't growing basil, so the gardener isn't growing herbs.
214	If the gardener isn't growing herbs, it must be the case that the gardener isn't growing plants.
215	If the gardener is growing herbs, then the gardener is growing basil.
216	The gardener is growing basil, therefore the gardener is growing flowers.
217	If the gardener is growing basil, that means the gardener isn't growing flowers.
218	If the gardener is growing herbs, then the gardener is growing plants.
219	If the gardener isn't growing herbs, that means the gardener isn't growing rosemary.
220	If the gardener isn't growing herbs, it must be the case that the gardener isn't growing plants.
221	If the gardener is growing herbs, it must be the case that the gardener is growing rosemary.
222	The gardener is growing rosemary, therefore the gardener is growing flowers.
223	If the gardener is growing rosemary, that means the gardener isn't growing flowers.
224	If he is hosting a party, it must be the case that he is hosting an event.
225	He isn't hosting a party, therefore he isn't hosting a wedding.
226	He isn't hosting a party, therefore he isn't hosting an event.
227	He is hosting a party, so he is hosting a wedding.
228	If he is hosting a wedding, it must be the case that he is hosting a party.
229	If he is hosting a wedding, that means he isn't hosting a party.
230	If she is hosting a party, then she is hosting a wedding.
231	She isn't hosting a party, so she isn't hosting a wedding.
232	If she isn't hosting a party, then she isn't hosting a wedding.
233	If she is hosting a wedding, that means she is hosting a party.
234	She is hosting a wedding, therefore she is hosting a party.
235	She is hosting a wedding, so she isn't hosting a party.
236	If the hotel is hosting a party, then the hotel is hosting an event.
237	The hotel isn't hosting a wedding, so the hotel isn't hosting a party.
238	If the hotel isn't hosting a party, then the hotel isn't hosting an event.
239	The hotel is hosting a wedding, so the hotel is hosting a party.
240	If the hotel is hosting a wedding, that means the hotel is hosting a party.
241	If the hotel is hosting a wedding, then the hotel isn't hosting a party.
242	If he is hosting a party, it must be the case that he is hosting an event.
243	If he isn't hosting a party, then he isn't hosting a ball.
244	He isn't hosting a party, so he isn't hosting an event.
245	He is hosting a ball, so he is hosting a party.
246	If he is hosting a ball, that means he is hosting a party.
247	He is hosting a ball, therefore he isn't hosting a party.
248	If she is hosting a party, it must be the case that she is hosting an event.
249	If she isn't hosting a party, that means she isn't hosting a ball.
250	If she isn't hosting a party, then she isn't hosting an event.
251	If she is hosting a ball, then she is hosting a party.
252	She is hosting a ball, therefore she is hosting a party.
253	If she is hosting a ball, that means she isn't hosting a party.
254	The hotel is hosting a party, so the hotel is hosting an event.
255	If the hotel isn't hosting a ball, it must be the case that the hotel isn't hosting a party.
256	If the hotel isn't hosting a party, then the hotel isn't hosting an event.
257	The hotel is hosting a party, so the hotel is hosting a ball.
258	If the hotel is hosting a ball, it must be the case that the hotel is hosting a party.
259	If the hotel is hosting a ball, then the hotel isn't hosting a party.
260	He is hosting a party, therefore he is hosting an event.
261	If he isn't hosting a party, then he isn't hosting an event.
262	If she is hosting a party, then she is hosting an event.
263	If she isn't hosting a party, then she isn't hosting an event.
264	If the hotel is hosting a party, that means the hotel is hosting an event.
265	The hotel isn't hosting a party, therefore the hotel isn't hosting an event.
266	The boy is donating an organ, so the boy is donating a kidney.
267	If the boy isn't donating an organ, it must be the case that the boy isn't donating a kidney.
268	If David is donating an organ, that means David is donating a kidney.
269	David isn't donating an organ, therefore David isn't donating a kidney.
270	If she is donating an organ, then she is donating a heart.
271	If she isn't donating a heart, that means she isn't donating an organ.
272	She isn't donating an organ, therefore she isn't donating a heart.
273	She is donating an organ, therefore she is donating a heart.
274	If she is donating a heart, it must be the case that she is donating an organ.
275	If she is donating a heart, then she isn't donating an organ.
276	If the girl is donating an organ, then the girl is donating a heart.
277	If the girl isn't donating a heart, then the girl isn't donating an organ.
278	If the girl isn't donating an organ, it must be the case that the girl isn't donating a heart.
279	If the girl is donating an organ, it must be the case that the girl is donating a heart.
280	The girl is donating a heart, so the girl is donating an organ.
281	The girl is donating a heart, so the girl isn't donating an organ.
282	If Sarah is donating an organ, that means Sarah is donating a liver.
283	If Sarah isn't donating a liver, then Sarah isn't donating an organ.
284	Sarah isn't donating an organ, so Sarah isn't donating a body part.
285	Sarah is donating an organ, therefore Sarah is donating a liver.
286	Sarah is donating a liver, so Sarah is donating an organ.
287	Sarah is donating a liver, therefore Sarah isn't donating an organ.
288	If she is donating an organ, that means she is donating a liver.
289	If she isn't donating a liver, that means she isn't donating an organ.
290	If she isn't donating an organ, that means she isn't donating a liver.
291	If she is donating a liver, it must be the case that she is donating an organ.
292	She is donating a liver, therefore she is donating an organ.
293	If she is donating a liver, that means she isn't donating an organ.
294	If David is donating an organ, it must be the case that David is donating a liver.
295	If David isn't donating an organ, it must be the case that David isn't donating a liver.
296	If David isn't donating an organ, then David isn't donating a liver.
297	If David is donating an organ, it must be the case that David is donating a liver.
298	If David is donating a liver, it must be the case that David is donating an organ.
299	David is donating a liver, so David isn't donating an organ.
300	If he is donating an organ, that means he is donating a heart.
301	If he isn't donating an organ, then he isn't donating a heart.
302	If he isn't donating an organ, that means he isn't donating a heart.
303	He is donating an organ, therefore he is donating a heart.
304	If he is donating a heart, that means he is donating an organ.
305	If he is donating a heart, that means he isn't donating an organ.
306	If the girl is donating an organ, it must be the case that the girl is donating a liver.
307	If the girl isn't donating a liver, that means the girl isn't donating an organ.
308	If the girl isn't donating an organ, then the girl isn't donating a liver.
309	If the girl is donating a liver, then the girl is donating an organ.
310	If the girl is donating a liver, then the girl is donating an organ.
311	If the girl is donating a liver, then the girl isn't donating an organ.
312	If he is donating an organ, that means he is donating a liver.
313	If he isn't donating an organ, it must be the case that he isn't donating a liver.
314	He isn't donating an organ, so he isn't donating a liver.
315	If he is donating an organ, it must be the case that he is donating a liver.
316	If he is donating a liver, that means he is donating an organ.
317	If he is donating a liver, it must be the case that he isn't donating an organ.
318	If she is donating an organ, it must be the case that she is donating a body part.
319	If she isn't donating an organ, then she isn't donating a kidney.
320	The girl is donating an organ, so the girl is donating a kidney.
321	If the girl isn't donating an organ, then the girl isn't donating a kidney.
322	If the writer is editing a manual, that means the writer is editing a novel.
323	The writer is editing a manual, therefore the writer isn't writing a novel.
324	The writer is writing a manual, so the writer is writing a novel.
325	If the writer is writing a manual, it must be the case that the writer isn't writing a novel.
326	The author is editing a manual, therefore the author is editing a novel.
327	The author is editing a manual, therefore the author isn't writing a novel.
328	If the writer is reading a manual, it must be the case that the writer is reading a novel.
329	If the writer is reading a manual, it must be the case that the writer isn't writing a novel.
330	He is writing a textbook, therefore he is writing a novel.
331	If he is writing a textbook, that means he isn't writing a novel.
332	She is writing a textbook, therefore she is writing a novel.
333	If she is writing a textbook, that means she isn't writing a novel.
334	He is editing a manual, so he is editing a novel.
335	If he is editing a manual, then he isn't writing a novel.
336	She is reading a memoir, therefore she is reading a novel.
337	If she is reading a memoir, it must be the case that she isn't writing a novel.
338	If the writer is writing a memoir, then the writer is writing a novel.
339	If the writer is writing a memoir, then the writer isn't editing a novel.
340	If the writer is writing a manual, then the writer is writing a novel.
341	If the writer is writing a manual, then the writer isn't editing a novel.
342	If she is editing a memoir, that means she is editing a novel.
343	If she is editing a memoir, then she isn't editing a novel.
344	If the writer is reading a manual, that means the writer is reading a novel.
345	If the writer is reading a manual, then the writer isn't editing a novel.
346	If he spotted a bird, it must be the case that he spotted an animal.
347	He didn't spot an eagle, so he didn't spot a bird.
348	If he didn't spot a bird, then he didn't spot an animal.
349	If he spotted an eagle, that means he spotted a bird.
350	If he spotted an eagle, that means he spotted a bird.
351	He spotted an eagle, so he didn't spot a bird.
352	The hiker spotted a bird, therefore the hiker spotted an animal.
353	The hiker didn't spot a bird, so the hiker didn't spot a robin.
354	If the hiker didn't spot a bird, it must be the case that the hiker didn't spot an animal.
355	If the hiker spotted a bird, then the hiker spotted a robin.
356	If the hiker spotted a robin, then the hiker spotted a bird.
357	The hiker spotted a robin, therefore the hiker didn't spot a bird.
358	The hiker spotted a bird, so the hiker spotted an animal.
359	If the hiker didn't spot a bird, it must be the case that the hiker didn't spot an eagle.
360	The hiker didn't spot a bird, therefore the hiker didn't spot an animal.
361	If the hiker spotted an eagle, then the hiker spotted a bird.
362	If the hiker spotted an eagle, that means the hiker spotted a bird.
363	If the hiker spotted an eagle, then the hiker didn't spot a bird.
364	If she spotted a bird, it must be the case that she spotted an animal.
365	If she didn't spot a bird, that means she didn't spot a crow.
366	If she didn't spot a bird, that means she didn't spot a crow.
367	If she spotted a bird, it must be the case that she spotted a crow.
368	If she spotted a crow, that means she spotted a bird.
369	If she spotted a crow, then she didn't spot a bird.
370	The biologist spotted a bird, so the biologist spotted an animal.
371	The biologist didn't spot an eagle, so the biologist didn't spot a bird.
372	If the biologist didn't spot a bird, then the biologist didn't spot an animal.
373	If the biologist spotted an eagle, then the biologist spotted a bird.
374	The biologist spotted an eagle, therefore the biologist spotted a bird.
375	If the biologist spotted an eagle, it must be the case that the biologist didn't spot a bird.
376	She spotted a bird, so she spotted an animal.
377	She didn't spot an eagle, therefore she didn't spot a bird.
378	She didn't spot a bird, so she didn't spot an animal.
379	If she spotted a bird, it must be the case that she spotted an eagle.
380	If she spotted an eagle, then she spotted a bird.
381	If she spotted an eagle, it must be the case that she didn't spot a bird.
382	The biologist spotted a bird, so the biologist spotted an animal.
383	If the biologist didn't spot a bird, that means the biologist didn't spot a robin.
384	If the biologist didn't spot a bird, that means the biologist didn't spot an animal.
385	If the biologist spotted a robin, that means the biologist spotted a bird.
386	The biologist spotted a robin, so the biologist spotted a bird.
387	If the biologist spotted a robin, then the biologist didn't spot a bird.
388	If the hiker spotted a bird, it must be the case that the hiker spotted an animal.
389	If the hiker didn't spot a bird, that means the hiker didn't spot a crow.
390	If the hiker didn't spot a bird, that means the hiker didn't spot an animal.
391	If the hiker spotted a bird, that means the hiker spotted a crow.
392	The hiker spotted a crow, therefore the hiker spotted a bird.
393	The hiker spotted a crow, therefore the hiker didn't spot a bird.
394	He spotted a bird, so he spotted an animal.
395	He didn't spot a bird, therefore he didn't spot a crow.
396	He didn't spot a bird, therefore he didn't spot an animal.
397	He spotted a bird, therefore he spotted a crow.
398	He spotted a crow, so he spotted a bird.
399	He spotted a crow, therefore he didn't spot a bird.
400	If the biologist spotted a bird, it must be the case that the biologist spotted an animal.
401	If the biologist didn't spot a bird, that means the biologist didn't spot a crow.
402	If the biologist didn't spot a bird, it must be the case that the biologist didn't spot an animal.
403	The biologist spotted a bird, so the biologist spotted a crow.
404	If the biologist spotted a crow, that means the biologist spotted a bird.
405	If the biologist spotted a crow, that means the biologist didn't spot a bird.
406	He spotted a bird, so he spotted an animal.
407	If he didn't spot a robin, it must be the case that he didn't spot a bird.
408	If he didn't spot a bird, then he didn't spot an animal.
409	He spotted a bird, therefore he spotted a robin.
410	If he spotted a robin, it must be the case that he spotted a bird.
411	If he spotted a robin, that means he didn't spot a bird.
412	If she spotted a bird, then she spotted an animal.
413	She didn't spot a bird, so she didn't spot a robin.
414	If she didn't spot a bird, it must be the case that she didn't spot an animal.
415	She spotted a bird, therefore she spotted a robin.
416	If she spotted a robin, then she spotted a bird.
417	If she spotted a robin, it must be the case that she didn't spot a bird.
418	If David drank a soda, that means David drank a drink.
419	David isn't pouring a soda, therefore David isn't pouring a drink.
420	The girl drank a soda, so the girl drank a drink.
421	If the girl isn't pouring a soda, then the girl isn't pouring a drink.
422	If he is pouring a soda, then he is pouring a drink.
423	If he didn't drink a soda, it must be the case that he didn't drink a coke.
424	If he didn't drink a soda, it must be the case that he didn't drink a drink.
425	If he is pouring a soda, that means he is pouring a coke.
426	If he is pouring a coke, then he is pouring a coffee.
427	If he is pouring a coke, that means he didn't drink a coffee.
428	If the boy is pouring a soda, that means the boy is pouring a drink.
429	If the boy isn't pouring a soda, then the boy isn't pouring a drink.
430	If he drank a soda, it must be the case that he drank a drink.
431	He isn't pouring a coke, therefore he isn't pouring a soda.
432	If he isn't pouring a soda, that means he isn't pouring a drink.
433	If he drank a coke, then he drank a soda.
434	He drank a coke, therefore he drank a coffee.
435	He drank a coke, so he isn't pouring a coffee.
436	If Sarah drank a soda, it must be the case that Sarah drank a drink.
437	If Sarah isn't pouring a soda, then Sarah isn't pouring a drink.
438	She drank a soda, therefore she drank a drink.
439	She isn't pouring a coke, therefore she isn't pouring a soda.
440	She isn't pouring a soda, therefore she isn't pouring a drink.
441	She drank a soda, therefore she drank a coke.
442	If she drank a coke, that means she drank a coffee.
443	If she drank a coke, it must be the case that she isn't pouring a coffee.
444	The girl is pouring a soda, therefore the girl is pouring a drink.
445	The girl didn't drink a soda, therefore the girl didn't drink a drink.
446	If he drank a soda, then he drank a drink.
447	He isn't pouring a soda, so he isn't pouring a drink.
448	If Sarah drank a soda, then Sarah drank a drink.
449	Sarah didn't drink a soda, therefore Sarah didn't drink a coke.
450	If Sarah didn't drink a soda, that means Sarah didn't drink a drink.
451	Sarah drank a soda, so Sarah drank a coke.
452	Sarah drank a coke, therefore Sarah drank a coffee.
453	Sarah drank a coke, so Sarah didn't drink a coffee.
454	If she is pouring a soda, it must be the case that she is pouring a drink.
455	If she didn't drink a soda, it must be the case that she didn't drink a drink.
456	The boy is pouring a soda, therefore the boy is pouring a drink.
457	If the boy didn't drink a soda, then the boy didn't drink a coke.
458	If the boy didn't drink a soda, it must be the case that the boy didn't drink a drink.
459	The boy is pouring a soda, therefore the boy is pouring a coke.
460	If the boy is pouring a coke, it must be the case that the boy is pouring a coffee.
461	If the boy is pouring a coke, that means the boy didn't drink a coffee.
462	If Sarah is cooking a meal, then Sarah is cooking food.
463	If Sarah isn't cooking a meal, that means Sarah isn't cooking lunch.
464	If Sarah isn't cooking a meal, that means Sarah isn't cooking food.
465	If Sarah is cooking lunch, it must be the case that Sarah is cooking a meal.
466	If Sarah is cooking lunch, that means Sarah is cooking a meal.
467	If Sarah is cooking lunch, it must be the case that Sarah isn't cooking a snack.
468	The girl is cooking a meal, therefore the girl is cooking food.
469	If the girl isn't cooking dinner, then the girl isn't cooking a meal.
470	If the girl isn't cooking a meal, it must be the case that the girl isn't cooking food.
471	If the girl is cooking a meal, then the girl is cooking dinner.
472	The girl is cooking dinner, therefore the girl is cooking a snack.
473	If the girl is cooking dinner, it must be the case that the girl isn't cooking a snack.
474	If Sarah is eating a meal, then Sarah is eating food.
475	If Sarah isn't eating dinner, then Sarah isn't eating a meal.
476	If Sarah isn't eating a meal, that means Sarah isn't eating dinner.
477	If Sarah is eating a meal, it must be the case that Sarah is eating dinner.
478	Sarah is eating dinner, so Sarah is eating a snack.
479	If Sarah is eating dinner, that means Sarah isn't eating a snack.
480	He is cooking a meal, therefore he is cooking breakfast.
481	If he isn't cooking breakfast, that means he isn't cooking a meal.
482	If he isn't cooking a meal, then he isn't cooking food.
483	If he is cooking breakfast, it must be the case that he is cooking a meal.
484	If he is cooking breakfast, that means he is cooking a meal.
485	If he is cooking breakfast, then he isn't cooking a meal.
486	The girl is cooking a meal, therefore the girl is cooking food.
487	The girl isn't eating breakfast, therefore the girl isn't eating a meal.
488	If the girl isn't eating a meal, then the girl isn't eating breakfast.
489	The girl is cooking a meal, so the girl is cooking breakfast.
490	If the girl is cooking breakfast, it must be the case that the girl is cooking a meal.
491	The girl is cooking breakfast, therefore the girl isn't eating a meal.
492	The boy is eating a meal, therefore the boy is eating food.
493	If the boy isn't eating a meal, then the boy isn't eating dinner.
494	If the boy isn't eating a meal, then the boy isn't eating dinner.
495	The boy is eating dinner, therefore the boy is eating a meal.
496	The boy is eating dinner, therefore the boy is eating a snack.
497	If the boy is eating dinner, it must be the case that the boy isn't eating a snack.
498	David is cooking a meal, therefore David is cooking food.
499	David isn't eating lunch, so David isn't eating a meal.
500	David isn't eating a meal, so David isn't eating lunch.
501	If David is cooking lunch, it must be the case that David is cooking a meal.
502	If David is cooking lunch, it must be the case that David is cooking a snack.
503	David is cooking lunch, so David isn't eating a meal.
504	She is cooking a meal, therefore she is cooking food.
505	If she isn't eating a meal, then she isn't eating dinner.
506	If she isn't eating a meal, then she isn't eating dinner.
507	If she is cooking a meal, then she is cooking dinner.
508	She is cooking dinner, so she is cooking a snack.
509	If she is cooking dinner, that means she isn't eating a meal.
510	If she is eating a meal, it must be the case that she is eating food.
511	She isn't eating lunch, therefore she isn't eating a meal.
512	She isn't eating a meal, so she isn't eating lunch.
513	She is eating a meal, so she is eating lunch.
514	She is eating lunch, therefore she is eating a snack.
515	If she is eating lunch, it must be the case that she isn't eating a meal.
516	If the girl is eating a meal, then the girl is eating food.
517	If the girl isn't cooking dinner, then the girl isn't cooking a meal.
518	If the girl isn't cooking a meal, then the girl isn't cooking dinner.
519	If the girl is eating dinner, it must be the case that the girl is eating a meal.
520	The girl is eating dinner, therefore the girl is eating a snack.
521	The girl is eating dinner, therefore the girl isn't cooking a snack.
522	If Sarah is eating a meal, then Sarah is eating food.
523	If Sarah isn't eating a meal, that means Sarah isn't eating lunch.
524	Sarah isn't eating a meal, therefore Sarah isn't eating lunch.
525	Sarah is eating a meal, so Sarah is eating lunch.
526	If Sarah is eating lunch, then Sarah is eating a snack.
527	If Sarah is eating lunch, it must be the case that Sarah isn't eating a snack.
528	David is cooking a meal, so David is cooking breakfast.
529	If David isn't cooking a meal, it must be the case that David isn't cooking breakfast.
530	David isn't cooking a meal, so David isn't cooking food.
531	David is cooking a meal, so David is cooking breakfast.
532	If David is cooking breakfast, then David is cooking a snack.
533	David is cooking breakfast, so David isn't cooking a meal.
534	She is addicted to a drug, therefore she is addicted to cocaine.
535	If she isn't addicted to cocaine, then she isn't addicted to a drug.
536	If she isn't addicted to a drug, then she isn't addicted to cocaine.
537	If she is addicted to cocaine, then she is addicted to a drug.
538	If she is addicted to cocaine, then she is addicted to water.
539	If she is addicted to cocaine, it must be the case that she isn't addicted to water.
540	David is consuming a drug, so David is consuming caffeine.
541	If David isn't consuming a drug, that means David isn't consuming caffeine.
542	David isn't consuming a drug, so David isn't consuming caffeine.
543	If David is consuming caffeine, it must be the case that David is consuming a drug.
544	David is consuming caffeine, so David is consuming water.
545	David is consuming caffeine, so David isn't consuming water.
546	If the boy is addicted to a drug, then the boy is addicted to cocaine.
547	The boy isn't addicted to cocaine, so the boy isn't addicted to a drug.
548	The boy isn't addicted to a drug, so the boy isn't addicted to cocaine.
549	If the boy is addicted to a drug, then the boy is addicted to cocaine.
550	If the boy is addicted to cocaine, then the boy is addicted to water.
551	If the boy is addicted to cocaine, it must be the case that the boy isn't addicted to water.
552	If the boy is consuming a drug, it must be the case that the boy is consuming caffeine.
553	The boy isn't addicted to caffeine, so the boy isn't addicted to a drug.
554	If the boy isn't addicted to a drug, then the boy isn't addicted to caffeine.
555	If the boy is consuming a drug, it must be the case that the boy is consuming caffeine.
556	If the boy is consuming caffeine, it must be the case that the boy is consuming water.
557	If the boy is consuming caffeine, that means the boy isn't addicted to water.
558	If the girl is addicted to a drug, then the girl is addicted to caffeine.
559	If the girl isn't addicted to a drug, it must be the case that the girl isn't addicted to caffeine.
560	If the girl isn't addicted to a drug, it must be the case that the girl isn't addicted to caffeine.
561	The girl is addicted to a drug, so the girl is addicted to caffeine.
562	If the girl is addicted to caffeine, it must be the case that the girl is addicted to water.
563	If the girl is addicted to caffeine, it must be the case that the girl isn't addicted to water.
564	He is consuming a drug, so he is consuming caffeine.
565	He isn't consuming caffeine, so he isn't consuming a drug.
566	If he isn't consuming a drug, then he isn't consuming caffeine.
567	If he is consuming caffeine, then he is consuming a drug.
568	If he is consuming caffeine, then he is consuming water.
569	If he is consuming caffeine, then he isn't consuming water.
570	If Sarah is consuming a drug, then Sarah is consuming caffeine.
571	If Sarah isn't addicted to a drug, it must be the case that Sarah isn't addicted to caffeine.
572	If Sarah isn't addicted to a drug, then Sarah isn't addicted to caffeine.
573	Sarah is consuming caffeine, therefore Sarah is consuming a drug.
574	Sarah is consuming caffeine, so Sarah is consuming water.
575	If Sarah is consuming caffeine, it must be the case that Sarah isn't addicted to water.
576	If he is addicted to a drug, it must be the case that he is addicted to caffeine.
577	If he isn't consuming a drug, it must be the case that he isn't consuming caffeine.
578	If he isn't consuming a drug, then he isn't consuming caffeine.
579	He is addicted to a drug, so he is addicted to caffeine.
580	If he is addicted to caffeine, it must be the case that he is addicted to water.
581	He is addicted to caffeine, so he isn't consuming water.
582	If the girl is addicted to a drug, that means the girl is addicted to cocaine.
583	The girl isn't addicted to cocaine, so the girl isn't addicted to a drug.
584	The girl isn't addicted to a drug, therefore the girl isn't addicted to cocaine.
585	If the girl is addicted to a drug, it must be the case that the girl is addicted to cocaine.
586	If the girl is addicted to cocaine, it must be the case that the girl is addicted to water.
587	The girl is addicted to cocaine, so the girl isn't addicted to water.
588	David is addicted to a drug, therefore David is addicted to cocaine.
589	If David isn't consuming a drug, it must be the case that David isn't consuming cocaine.
590	David isn't consuming a drug, so David isn't consuming cocaine.
591	If David is addicted to cocaine, then David is addicted to a drug.
592	If David is addicted to cocaine, that means David is addicted to water.
593	If David is addicted to cocaine, that means David isn't consuming water.
594	The farm produces parmesan, therefore the farm produces cheese.
595	The farm produces parmesan, so the farm doesn't sell cheese.
596	The farm sells cheese, therefore the farm sells brie.
597	If the farm doesn't produce cheese, that means the farm doesn't produce brie.
598	If the farm doesn't produce cheese, that means the farm doesn't produce brie.
599	The farm sells brie, so the farm sells cheese.
600	If the farm sells brie, that means the farm sells cheese.
601	The farm sells brie, therefore the farm doesn't produce cheese.
602	The farm sells parmesan, so the farm sells cheese.
603	If the farm sells parmesan, then the farm doesn't sell cheese.
604	If the farm sells parmesan, then the farm sells cheese.
605	The farm sells parmesan, so the farm doesn't produce cheese.
606	She sells parmesan, so she sells cheese.
607	She sells parmesan, therefore she doesn't produce cheese.
608	She sells cheese, therefore she sells brie.
609	If she doesn't produce cheese, it must be the case that she doesn't produce brie.
610	If she doesn't produce cheese, then she doesn't produce brie.
611	If she sells cheese, then she sells brie.
612	If she sells brie, then she sells cheese.
613	If she sells brie, then she doesn't produce cheese.
614	If he produces cheese, then he produces brie.
615	He doesn't produce cheese, therefore he doesn't produce brie.
616	If he doesn't produce cheese, that means he doesn't produce brie.
617	He produces cheese, so he produces brie.
618	He produces brie, therefore he produces cheese.
619	If he produces brie, that means he doesn't produce cheese.
620	If she produces parmesan, that means she produces cheese.
621	If she produces parmesan, then she doesn't sell cheese.
622	She is meeting a sibling, therefore she is meeting a brother.
623	She isn't meeting a brother, therefore she isn't meeting a sibling.
624	If she isn't meeting a sibling, it must be the case that she isn't meeting a brother.
625	If she is meeting a brother, then she is meeting a sibling.
626	If she is meeting a brother, that means she is meeting a cousin.
627	If she is meeting a brother, that means she isn't meeting a cousin.
628	The girl is helping a sibling, therefore the girl is helping a sister.
629	The girl isn't helping a sister, therefore the girl isn't helping a sibling.
630	The girl isn't helping a sibling, so the girl isn't helping a sister.
631	If the girl is helping a sibling, that means the girl is helping a sister.
632	The girl is helping a sister, therefore the girl is helping a cousin.
633	The girl is helping a sister, therefore the girl isn't helping a cousin.
634	If David is meeting a sibling, then David is meeting a brother.
635	If David isn't fighting with a brother, it must be the case that David isn't fighting with a sibling.
636	If David isn't fighting with a sibling, it must be the case that David isn't fighting with a brother.
637	David is meeting a brother, so David is meeting a sibling.
638	If David is meeting a brother, it must be the case that David is meeting a cousin.
639	If David is meeting a brother, that means David isn't fighting with a cousin.
640	If she is fighting with a sibling, it must be the case that she is fighting with a sister.
641	She isn't helping a sister, so she isn't helping a sibling.
642	She isn't helping a sibling, therefore she isn't helping a sister.
643	If she is fighting with a sibling, then she is fighting with a sister.
644	If she is fighting with a sister, it must be the case that she is fighting with a cousin.
645	If she is fighting with a sister, then she isn't helping a cousin.
646	He is helping a sibling, so he is helping a sister.
647	If he isn't fighting with a sister, then he isn't fighting with a sibling.
648	If he isn't fighting with a sibling, then he isn't fighting with a sister.
649	If he is helping a sibling, it must be the case that he is helping a sister.
650	If he is helping a sister, it must be the case that he is helping a cousin.
651	If he is helping a sister, it must be the case that he isn't fighting with a cousin.
652	The boy is meeting a sibling, therefore the boy is meeting a sister.
653	The boy isn't helping a sister, therefore the boy isn't helping a sibling.
654	If the boy isn't helping a sibling, it must be the case that the boy isn't helping a sister.
655	The boy is meeting a sibling, therefore the boy is meeting a sister.
656	The boy is meeting a sister, so the boy is meeting a cousin.
657	If the boy is meeting a sister, then the boy isn't helping a cousin.
658	The boy is helping a sibling, therefore the boy is helping a sister.
659	The boy isn't helping a sister, so the boy isn't helping a sibling.
660	If the boy isn't helping a sibling, it must be the case that the boy isn't helping a sister.
661	If the boy is helping a sister, then the boy is helping a sibling.
662	If the boy is helping a sister, then the boy is helping a cousin.
663	If the boy is helping a sister, that means the boy isn't helping a cousin.
664	The boy is helping a sibling, therefore the boy is helping a sister.
665	If the boy isn't fighting with a sister, that means the boy isn't fighting with a sibling.
666	The boy isn't fighting with a sibling, so the boy isn't fighting with a sister.
667	If the boy is helping a sibling, it must be the case that the boy is helping a sister.
668	If the boy is helping a sister, it must be the case that the boy is helping a cousin.
669	If the boy is helping a sister, it must be the case that the boy isn't fighting with a cousin.
670	If Sarah is helping a sibling, then Sarah is helping a brother.
671	Sarah isn't helping a sibling, so Sarah isn't helping a brother.
672	Sarah isn't helping a sibling, therefore Sarah isn't helping a brother.
673	If Sarah is helping a sibling, that means Sarah is helping a brother.
674	If Sarah is helping a brother, it must be the case that Sarah is helping a cousin.
675	If Sarah is helping a brother, it must be the case that Sarah isn't helping a cousin.
676	If she is fighting with a sibling, it must be the case that she is fighting with a brother.
677	If she isn't fighting with a sibling, then she isn't fighting with a brother.
678	If she isn't fighting with a sibling, then she isn't fighting with a brother.
679	If she is fighting with a sibling, that means she is fighting with a brother.
680	If she is fighting with a brother, then she is fighting with a cousin.
681	If she is fighting with a brother, it must be the case that she isn't fighting with a cousin.
682	If he is meeting a sibling, that means he is meeting a brother.
683	If he isn't fighting with a brother, that means he isn't fighting with a sibling.
684	He isn't fighting with a sibling, therefore he isn't fighting with a brother.
685	If he is meeting a brother, that means he is meeting a sibling.
686	He is meeting a brother, so he is meeting a cousin.
687	If he is meeting a brother, then he isn't fighting with a cousin.
688	David is meeting a sibling, therefore David is meeting a sister.
689	David isn't fighting with a sibling, so David isn't fighting with a sister.
690	David isn't fighting with a sibling, therefore David isn't fighting with a sister.
691	David is meeting a sibling, so David is meeting a sister.
692	If David is meeting a sister, then David is meeting a cousin.
693	If David is meeting a sister, it must be the case that David isn't fighting with a cousin.
694	If the boy bought a computer, that means the boy bought a pc.
695	If the boy didn't break a pc, that means the boy didn't break a computer.
696	The boy didn't break a computer, so the boy didn't break a pc.
697	If the boy bought a pc, then the boy bought a computer.
698	If the boy bought a pc, that means the boy bought a phone.
699	If the boy bought a pc, it must be the case that the boy didn't break a phone.
700	If David bought a computer, it must be the case that David bought a laptop.
701	David didn't break a computer, therefore David didn't break a laptop.
702	If David didn't break a computer, then David didn't break a laptop.
703	David bought a computer, therefore David bought a laptop.
704	If David bought a laptop, it must be the case that David bought a computer.
705	If David bought a laptop, then David didn't break a computer.
706	The girl bought a computer, therefore the girl bought a pc.
707	If the girl didn't buy a pc, that means the girl didn't buy a computer.
708	If the girl didn't buy a computer, that means the girl didn't buy a pc.
709	If the girl bought a computer, it must be the case that the girl bought a pc.
710	If the girl bought a pc, it must be the case that the girl bought a phone.
711	If the girl bought a pc, it must be the case that the girl didn't buy a phone.
712	If the boy is using a computer, then the boy is using a pc.
713	The boy isn't using a computer, therefore the boy isn't using a pc.
714	If the boy isn't using a computer, that means the boy isn't using a pc.
715	The boy is using a pc, therefore the boy is using a computer.
716	If the boy is using a pc, it must be the case that the boy is using a phone.
717	The boy is using a pc, therefore the boy isn't using a phone.
718	If she bought a computer, it must be the case that she bought a pc.
719	If she didn't break a pc, that means she didn't break a computer.
720	If she didn't break a computer, it must be the case that she didn't break a pc.
721	She bought a pc, therefore she bought a computer.
722	She bought a pc, therefore she bought a computer.
723	If she bought a pc, it must be the case that she didn't break a phone.
724	If she is using a computer, it must be the case that she is using a laptop.
725	She didn't buy a computer, so she didn't buy a laptop.
726	If she didn't buy a computer, it must be the case that she didn't buy a laptop.
727	If she is using a laptop, then she is using a computer.
728	She is using a laptop, so she is using a phone.
729	If she is using a laptop, that means she didn't buy a phone.
730	If she broke a computer, it must be the case that she broke a laptop.
731	She didn't break a computer, therefore she didn't break a laptop.
732	If she didn't break a computer, then she didn't break a laptop.
733	She broke a computer, so she broke a laptop.
734	She broke a laptop, so she broke a phone.
735	She broke a laptop, therefore she didn't break a computer.
736	If David is using a computer, that means David is using a pc.
737	If David isn't using a computer, that means David isn't using a pc.
738	David isn't using a computer, therefore David isn't using a pc.
739	David is using a pc, therefore David is using a computer.
740	David is using a pc, therefore David is using a phone.
741	David is using a pc, therefore David isn't using a phone.
742	The boy bought a computer, therefore the boy bought a laptop.
743	If the boy didn't buy a laptop, that means the boy didn't buy a computer.
744	The boy didn't buy a computer, therefore the boy didn't buy a laptop.
745	The boy bought a laptop, therefore the boy bought a computer.
746	The boy bought a laptop, therefore the boy bought a phone.
747	If the boy bought a laptop, it must be the case that the boy didn't buy a phone.
748	If Sarah bought a computer, that means Sarah bought a pc.
749	Sarah didn't buy a computer, therefore Sarah didn't buy a pc.
750	Sarah didn't buy a computer, so Sarah didn't buy a pc.
751	Sarah bought a computer, so Sarah bought a pc.
752	If Sarah bought a pc, it must be the case that Sarah bought a phone.
753	Sarah bought a pc, so Sarah didn't buy a phone.
754	If he bought a computer, it must be the case that he bought a pc.
755	He didn't buy a computer, so he didn't buy a pc.
756	If he didn't buy a computer, then he didn't buy a pc.
757	If he bought a pc, then he bought a computer.
758	If he bought a pc, that means he bought a phone.
759	If he bought a pc, that means he didn't buy a phone.
760	If the boy broke a computer, that means the boy broke a pc.
761	The boy isn't using a pc, so the boy isn't using a computer.
762	If the boy isn't using a computer, that means the boy isn't using a pc.
763	If the boy broke a pc, then the boy broke a computer.
764	The boy broke a pc, so the boy broke a phone.
765	The boy broke a pc, so the boy isn't using a phone.
766	If Sarah is playing a string instrument, that means Sarah is playing an instrument.
767	If Sarah isn't learning to play a string instrument, it must be the case that Sarah isn't learning to play an instrument.
768	If he is tuning a string instrument, then he is tuning the guitar.
769	He isn't learning to play a string instrument, therefore he isn't learning to play the guitar.
770	If he isn't learning to play a string instrument, that means he isn't learning to play the guitar.
771	If he is tuning the guitar, it must be the case that he is tuning a string instrument.
772	He is tuning the guitar, so he is tuning a wind instrument.
773	If he is tuning the guitar, it must be the case that he isn't learning to play a wind instrument.
774	If the boy is playing a string instrument, that means the boy is playing the violin.
775	If the boy isn't tuning the violin, then the boy isn't tuning a string instrument.
776	The boy isn't tuning a string instrument, so the boy isn't tuning the violin.
777	The boy is playing the violin, so the boy is playing a string instrument.
778	If the boy is playing the violin, that means the boy is playing a wind instrument.
779	The boy is playing the violin, therefore the boy isn't tuning a wind instrument.
780	The girl is tuning a string instrument, so the girl is tuning an instrument.
781	The girl isn't playing a string instrument, therefore the girl isn't playing an instrument.
782	If she is tuning a string instrument, it must be the case that she is tuning the guitar.
783	If she isn't learning to play a string instrument, it must be the case that she isn't learning to play the guitar.
784	If she isn't learning to play a string instrument, then she isn't learning to play the guitar.
785	If she is tuning a string instrument, that means she is tuning the guitar.
786	If she is tuning the guitar, then she is tuning a wind instrument.
787	If she is tuning the guitar, then she isn't learning to play a wind instrument.
788	If he is playing a string instrument, that means he is playing an instrument.
789	If he isn't playing a string instrument, it must be the case that he isn't playing an instrument.
790	If David is playing a string instrument, then David is playing the guitar.
791	David isn't playing a string instrument, so David isn't playing the guitar.
792	If David isn't playing a string instrument, that means David isn't playing the guitar.
793	If David is playing a string instrument, that means David is playing the guitar.
794	If David is playing the guitar, that means David is playing a wind instrument.
795	David is playing the guitar, therefore David isn't playing a wind instrument.
796	David is playing a string instrument, so David is playing the banjo.
797	David isn't tuning a string instrument, so David isn't tuning an instrument.
798	If David is learning to play a string instrument, that means David is learning to play the guitar.
799	If David isn't playing a string instrument, then David isn't playing the guitar.
800	David isn't playing a string instrument, therefore David isn't playing the guitar.
801	If David is learning to play the guitar, that means David is learning to play a string instrument.
802	David is learning to play the guitar, therefore David is learning to play a wind instrument.
803	If David is learning to play the guitar, then David isn't playing a wind instrument.
804	If Sarah is learning to play a string instrument, it must be the case that Sarah is learning to play the violin.
805	Sarah isn't learning to play the violin, therefore Sarah isn't learning to play a string instrument.
806	Sarah isn't learning to play a string instrument, so Sarah isn't learning to play an instrument.
807	Sarah is learning to play a string instrument, so Sarah is learning to play the violin.
808	If Sarah is learning to play the violin, that means Sarah is learning to play a wind instrument.
809	If Sarah is learning to play the violin, then Sarah isn't learning to play a wind instrument.
810	If Sarah is playing a string instrument, then Sarah is playing the banjo.
811	If Sarah isn't playing a string instrument, then Sarah isn't playing an instrument.
812	She is learning to play a string instrument, therefore she is learning to play the guitar.
813	If she isn't learning to play a string instrument, it must be the case that she isn't learning to play the guitar.
814	If she isn't learning to play a string instrument, then she isn't learning to play the guitar.
815	If she is learning to play the guitar, then she is learning to play a string instrument.
816	She is learning to play the guitar, so she is learning to play a wind instrument.
817	She is learning to play the guitar, so she isn't learning to play a wind instrument.
818	If the sofa is made of wood, then the sofa is made of oak.
819	If the sofa isn't made of wood, it must be the case that the sofa isn't made of oak.
820	The sofa isn't made of wood, therefore the sofa isn't made of oak.
821	The sofa is made of wood, so the sofa is made of oak.
822	If the sofa is made of oak, it must be the case that the sofa is made of wood.
823	The sofa is made of oak, therefore the sofa isn't made of wood.
824	The chair is made of wood, so the chair is made of oak.
825	If the chair isn't made of oak, then the chair isn't made of wood.
826	The chair isn't made of wood, so the chair isn't made of oak.
827	If the chair is made of oak, that means the chair is made of wood.
828	The chair is made of oak, so the chair is made of wood.
829	The chair is made of oak, so the chair isn't made of wood.
830	If the couch is made of wood, that means the couch is made of oak.
831	The couch isn't made of wood, therefore the couch isn't made of oak.
832	If the couch isn't made of wood, it must be the case that the couch isn't made of oak.
833	The couch is made of wood, therefore the couch is made of oak.
834	If the couch is made of oak, it must be the case that the couch is made of wood.
835	If the couch is made of oak, that means the couch isn't made of wood.
836	The sofa is made of maple, so the sofa is made of wood.
837	If the sofa is made of maple, it must be the case that the sofa isn't made of wood.
838	If the chair is made of maple, then the chair is made of wood.
839	If the chair is made of maple, then the chair isn't made of wood.
840	The couch is made of maple, therefore the couch is made of wood.
841	If the couch is made of maple, that means the couch isn't made of wood.
842	If the sofa is made of wood, that means the sofa is made of pine.
843	The sofa isn't made of pine, therefore the sofa isn't made of wood.
844	The sofa isn't made of wood, so the sofa isn't made of pine.
845	If the sofa is made of wood, it must be the case that the sofa is made of pine.
846	If the sofa is made of pine, then the sofa is made of wood.
847	If the sofa is made of pine, that means the sofa isn't made of wood.
848	The chair is made of wood, so the chair is made of pine.
849	If the chair isn't made of wood, that means the chair isn't made of pine.
850	The chair isn't made of wood, so the chair isn't made of pine.
851	The chair is made of wood, therefore the chair is made of pine.
852	If the chair is made of pine, it must be the case that the chair is made of wood.
853	If the chair is made of pine, then the chair isn't made of wood.
854	If the couch is made of wood, that means the couch is made of pine.
855	The couch isn't made of wood, therefore the couch isn't made of pine.
856	If the couch isn't made of wood, then the couch isn't made of pine.
857	If the couch is made of pine, then the couch is made of wood.
858	If the couch is made of pine, then the couch is made of wood.
859	If the couch is made of pine, it must be the case that the couch isn't made of wood.