[QUESTION] If "Two men are having a conversation." does that mean that "Two men sit in silence."?
Options:
- yes
- it is not possible to tell
- no
The men can't be having a conversation and sit in silence at the same time.
The answer is no.

Q: Premise: "A man in a blue hooded sweatshirt has his hands on the back spokes of his upside-down bike."
Based on this premise, can we conclude that the hypothesis "As he sits on a low graffiti-covered wall among palm trees." is true?
Options:
- yes
- it is not possible to tell
- no
A: A boy is at a skate park attempting to repair his bike by the wall.
The answer is it is not possible to tell.

QUESTION: Premise: "A man in black laying on a bench with his head on the leg of an elderly gentleman wearing blue jeans."
Based on this premise, can we conclude that the hypothesis "A man  laying on a bench with his head on the leg of an  gentleman wearing blue jeans." is true?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: There is no color of the man inferred or the clothing described or the fact that the leg of the gentlemen is elderly (or not).
The answer is it is not possible to tell.

[QUESTION] Can we conclude from "Young dirt bikers try to get a dirt bike up a sandy hill." that "Young dirt bikers are riding bikes."?
Options:
- yes
- no
- it is not possible to tell
To get a dirt bike up a sandy hill implies riding bikes.
The answer is yes.

Q: Test for natural language inference.
Premise: "Man in black jacket looking a book while women in purple jacket blows her nose into a tissue."
Hypothesis: "Man in black jacket throws a baseball to a woman in a purple jacket."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: The man in black jacket cannot be looking a book and throwing a baseball at the same time.
The answer is no.

[QUESTION] Test for natural language inference.
Premise: "A man in his boat on the lake."
Hypothesis: "A man is fishing from his boat."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Being in a boat on the lake does not imply that the man is fishing.
The answer is it is not possible to tell.