Student asked: If "The brown dog is gnawing at something in the snow." does that mean that "The dog is digging in the sand."?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. The dog is either gnawing or it is digging. The ground cover is either snow or it is sand. The answer is no.

Student asked: Given the sentence "A man is looking at his camera." is it true that "A man and a camera."?
Teacher's response: Let's think. A man looking at his camera implies he with his camera. The answer is yes.

Student asked: Given the sentence "A man outdoors is placing plants in a cart." can we conclude that "A man has more than plants in his cart."?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. If a man places plants in his cart you can not infer that he has anything else in his cart other than plants. The answer is it is not possible to tell.

Student asked: Test for natural language inference.
Premise: "A man in a tall red hat is riding on a green tractor and waving to spectators."
Hypothesis: "The tractor is big."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Teacher's response:
Let's think. A man on a green tractor doesn't mean it is a big tractor. The answer is it is not possible to tell.