[Q] Given the sentence "Man seated on a bus looking out the window at pedestrians." is it true that "Man riding bus notices his friend outside walking on the street."?
[A] A man looking at pedestrians does not mean he notices his friend.
The answer is it is not possible to tell.

[Q] Can we conclude from "A girl raises her hands up in a crowd of people." that "A girl is trying to get someone's attention."?
Options:
- yes
- no
- it is not possible to tell
[A] Not all girls with raised hands are trying to get someone's attention.
The answer is it is not possible to tell.

[Q] Premise: "A man with a harness and rope attached to his waist is standing on top of a mountain overlooking water."
Hypothesis: "A man is repairing telephone lines."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
[A] Top of a mountain implies that there would be no telephone lines nearby to repair.
The answer is no.