[Q] If "Three teenagers in a subway playing around." does that mean that "Some people waiting on a train."?
Options:
- yes
- it is not possible to tell
- no
[A] Just because teenagers are around the subway doesn't mean they are waiting on a train.
The answer is it is not possible to tell.

[Q] Given the sentence "A snowboarder glides down a stair rail." is it true that "A sad snowboarder glides down a stair rail."?
[A] A snowboarder who glides down a rail doesn't particularly suggest sad snowboarder.
The answer is it is not possible to tell.

[Q] Premise: "A man with a beard standing in the water next to a wooden platform."
Based on this premise, can we conclude that the hypothesis "A clean shaven man is standing in the water." is true?
Options:
- yes
- it is not possible to tell
- no
[A] The man can't be clean shaven if he has a beard.
The answer is no.