[Q] Given the sentence "A black dog walking on the beach." can we conclude that "The dog can surf."?
Options:
- yes
- it is not possible to tell
- no
[A] A dog walking on the beach does not imply that he can surf.
The answer is it is not possible to tell.

[Q] Can we conclude from "A group of people gather and some are wearing white masks over their mouths." that "There are several people in a group."?
Options:
- yes
- no
- it is not possible to tell
[A] Group of people and several people in a group are equivalent as part of the whole description while gathering.
The answer is yes.

[Q] Can we conclude from "A man is holding an advertisement for quiznos subs." that "The man holding the advertisement for quiznos subs always has a smile on his face."?
Options:
- yes
- no
- it is not possible to tell
[A] Holding an advertisement does not mean he always has a smile on his face.
The answer is it is not possible to tell.