[QUESTION] Premise: "Two men watch a third man grill meat."
Based on this premise, can we conclude that the hypothesis "Three men barbecuing for a boy's birthday." is true?
Options:
- yes
- it is not possible to tell
- no
Three men barbecuing doesn't mean they are doing it for a boy's birthday.
The answer is it is not possible to tell.

[QUESTION] Can we conclude from "A man in a uniform saluting." that "A soldier saluting the president."?
Options:
- yes
- no
- it is not possible to tell
Not everyone in uniform is soldier and the salute receiving person the President.
The answer is it is not possible to tell.

[QUESTION] Given the sentence "A man and woman ride their bikes across a city street." is it true that "The woman is faster than the man."?
Riding their bikes does not imply the woman is faster than the man.
The answer is it is not possible to tell.

[QUESTION] If "Old women using a walker to go down the sidewalk." does that mean that "A woman walking with a walker."?
Options:
- yes
- it is not possible to tell
- no
A woman walking with a walker implies woman is using a walker.
The answer is yes.