[Q] Premise: "Surfer surfs ahead of a crashing wave."
Hypothesis: "A surfer stands up quickly on his surfboard."
Do we know that the hypothesis entailed by the premise?
[A] Not all surfer stands up quickly ahead of a crashing wave.
The answer is it is not possible to tell.

[Q] Premise: "Two boys do martial arts on a blue mat."
Hypothesis: "Boys do martial arts on a mat."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
[A] The boys are doing martial arts which is often done on a mat.
The answer is yes.

[Q] If "Three people walk past a red brick building." does that mean that "Three people walk past a building."?
Options:
- yes
- it is not possible to tell
- no

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
[A] Walking past a red brick building is walking past a building.
The answer is yes.