[Q] Given the sentence "A man sits on the window ledge of a jet plane and cleans the adjacent window in the front of the plane." is it true that "The man is sitting on the chair."?
[A] A person cannot sit on a chair while sitting on a window ledge simultaneously.
The answer is no.

[Q] Given the sentence "A man clothed like a chef preparing a hamburger in a crowded outdoor area." can we conclude that "A man is making bbq for a contest."?
Options:
- yes
- it is not possible to tell
- no
[A] Preparing a hamburger does not imply making BBQ for a contest.
The answer is it is not possible to tell.

[Q] Can we conclude from "Two men gesture at each other." that "While a third plays guitar."?
Options:
- yes
- no
- it is not possible to tell
[A] The third man is playing the guitar for the other two men.
The answer is it is not possible to tell.