[Q] Premise: "A man climbs a steep rock wall using safety ropes."
Hypothesis: "A man is outside climbing a rock wall."
Do we know that the hypothesis entailed by the premise?
[A] A man climbs a steep rock wall using safety ropes does not indicate that he is outside climbing a rock wall.
The answer is it is not possible to tell.

[Q] Given the sentence "Two men with black suits going up a escalator." can we conclude that "The men are in a mall."?
Options:
- yes
- it is not possible to tell
- no
[A] Going up an escalator doesn't mean they are in a mall.
The answer is it is not possible to tell.

[Q] Test for natural language inference.
Premise: "Two boys are watching a small train as it passes near them."
Hypothesis: "Two boys are playing with toy trains."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
[A] One cannot be watching a small train while playing with toy trains.
The answer is no.