[Q] Given the sentence "A man and a woman are looking at a body of water with their backs towards the camera." is it true that "The man and woman are about to go swimming."?
[A] Looking at a body of water doesn't have to mean to go for swimming.
The answer is it is not possible to tell.

[Q] Test for natural language inference.
Premise: "An old man in a hat sits and looks straight ahead."
Hypothesis: "The old man is sleeping at home in his chair."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
[A] An old man who looks straight ahead cannot at the same time be sleeping.
The answer is no.

[Q] Premise: "A bike rider performs a trick."
Hypothesis: "A woman sleeping on a beautiful bed."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
[A] Person performing trick with a bike can not be sleeping at the same time.
The answer is no.