Student asked: Given the sentence "Two basketball players oppose each other at the net." is it true that "The players are on opposing teams."?
Teacher's response: Let's think. Nowhere is it implied that the players are on teams of any sort. The answer is it is not possible to tell.

Student asked: Premise: "A man is wearing sound blockers on his ears."
Hypothesis: "The man has something near his ears."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. Sound blockers are something that goes on people's ears. If an object is on the man's ears then it must also be near his ears. The answer is yes.

Student asked: Premise: "Lady getting ready to hit the ball."
Hypothesis: "Lady playing baseball with her son."
Do we know that the hypothesis entailed by the premise?
Teacher's response: Let's think. Lady getting ready to hit the ball does not mean that she is playing baseball with her son. The answer is it is not possible to tell.

Student asked: Test for natural language inference.
Premise: "A crowd gathers outside a beautiful building with a fountain."
Hypothesis: "There is a crowd in the lobby."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Teacher's response:
Let's think. The lobby of a building is not outside of the building. The answer is no.