Student asked: Given the sentence "Girl hanging upside down with city in the background." is it true that "Girl playing on a jungle gym in a city."?
Teacher's response: Let's think. The city is either in the background or in a city. The answer is it is not possible to tell.

Student asked: Premise: "The hotdog vendor is working in central park."
Hypothesis: "There is a food vendor outside."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. A hot dog vendor is a food vendor. Central Park is outside. The answer is yes.

Student asked: Test for natural language inference.
Premise: "A motorcycle racer leans into the turn on a dusty track."
Hypothesis: "A racer passes an opponent on a turn."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Teacher's response: Let's think. A racer leaning into a turn is not assumed to be doing so so that he passes an opponent. The answer is it is not possible to tell.

Student asked: Given the sentence "The boy is performing a trick on a red rail with a skateboard." is it true that "He is a beginner."?
Teacher's response:
Let's think. The boy performing a trick on a red rail with a skateboard is not necessarily a beginner. The answer is it is not possible to tell.