Student asked: Test for natural language inference.
Premise: "A guy with his hands in his pockets of his jacket while walking beside a white business van."
Hypothesis: "A guy is walking beside a black business van."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Teacher's response: Let's think. A guy is walking beside a black OR a white business van. The answer is no.

Student asked: Premise: "A little girl in a purple shirt and helmet is riding on a scooter."
Hypothesis: "Girl with no helmet riding a scooter."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. Can not be no helmet and helmet at the same time. The answer is no.

Student asked: Given the sentence "Man kneeling in the street taking a photograph." can we conclude that "Man with underwater camera in a shark cage."?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. A man with an underwater camera in a shark cage would not be kneeling in a street. The answer is no.

Student asked: Given the sentence "A mountain climber scales a steep rock face." can we conclude that "A climber mounts a steep surface."?
Options:
- yes
- it is not possible to tell
- no
Teacher's response:
Let's think. The climber is scaling a steep roockface therefore he has mounted it. The answer is yes.