[Q] Premise: "A person in a blue shirt and hat working on a roof of a structure that is behind a fence."
Based on this premise, can we conclude that the hypothesis "A person in a blue shirt and hat working on a roof of a structure that is behind a fence." is true?
Options:
- yes
- it is not possible to tell
- no
[A] Working on a roof of a structure is where one would be working on a roof.
The answer is yes.

[Q] If "A girl rides a bike down a city sidewalk." does that mean that "There is a girl riding a bike."?
Options:
- yes
- it is not possible to tell
- no
[A] Girl rides a bike is a rephrasing of girl riding a bike.
The answer is yes.

[Q] Given the sentence "A little boy in a red outfit is on a man's shoulders." can we conclude that "A boy are sitting on a sofa."?
Options:
- yes
- it is not possible to tell
- no
[A] A boy cannot be on the sofa if he is on a man's shoulders.
The answer is no.