Q: Can we conclude from "A man in a yellow shirt is working with wood." that "A man in yellow is holding a rock."?
Options:
- yes
- no
- it is not possible to tell
A: Holding is not the same as working. Wood is not the same as rock.
The answer is no.

Q: If "Two men holding skateboards walk down a sidewalk." does that mean that "The two men are sitting on a park bench."?
Options:
- yes
- it is not possible to tell
- no
A: Men can not walk down a sidewalk and be sitting on a park bench at the same time.
The answer is no.

Q: Given the sentence "The lady in the blue shirt is riding a bike across a bridge." is it true that "The lady is riding a bike."?
A: In order for a lady to ride her bike across a bridge she must be riding her bike.
The answer is yes.

Q: Premise: "A black guy smiling while playing a guitar."
Based on this premise, can we conclude that the hypothesis "The guy is enjoying the music." is true?
Options:
- yes
- it is not possible to tell
- no
A:
The guy is smiling which implies that he is enjoying himself.
The answer is yes.