Q: Test for natural language inference.
Premise: "Rock climber scaling a straight up and down rock with crack in middle."
Hypothesis: "A person is rock climbing on a cracked rock."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: If a rock has a crack in its middle it is a cracked rock.
The answer is yes.

Q: Test for natural language inference.
Premise: "Three surgeons operate on a patient while wearing magnifying lenses on their safety glasses."
Hypothesis: "Three lumberjacks are performing surgery."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: The people performing the surgery cannot be surgeons if they are lumberjacks.
The answer is no.

Q: Premise: "Two men talk about an unidentified man in a photograph in front of an audience."
Based on this premise, can we conclude that the hypothesis "The two men are alone." is true?
Options:
- yes
- it is not possible to tell
- no
A: Two men cannot talk in front of an audience and be alone at the same time.
The answer is no.

Q: Premise: "People fishing on a still lake with mountains in the background."
Hypothesis: "Fishermen looking for the first bite of the morning."
Do we know that the hypothesis entailed by the premise?
A:
Not all people fishing are looking for the first bite of the morning.
The answer is it is not possible to tell.