[QUESTION] Can we conclude from "A man using a tripod is taking a photo of another man." that "A woman using a tripod is taking a photo of another woman."?
Options:
- yes
- no
- it is not possible to tell
The man using the camera is not a woman. The subject man is not a woman.
The answer is no.

Q: If "A dog plays in the sand with a ball." does that mean that "A dog returns a ball that was thrown."?
Options:
- yes
- it is not possible to tell
- no
A: The dog plays with a ball but it's not necessarily true that the dog returns a ball that was thrown.
The answer is it is not possible to tell.

QUESTION: Premise: "A young man holding a gun in a boat."
Hypothesis: "A navy seal holds his machine gun as the ship approaches land."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: A man could be anything other than a Navy seal. There are may kinds of guns other than machine guns and a boat could docked or going anywhere other than toward land.
The answer is it is not possible to tell.

[QUESTION] Test for natural language inference.
Premise: "Two women and a girl dressed up to take a photo in the great outdoors."
Hypothesis: "Two women and a girl eat dinner a 6 pm."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Dressed up to take a photo does not imply to eat dinner.
The answer is it is not possible to tell.

Q: If "A man wearing a black jacket is working on a roof." does that mean that "A man is working outside."?
Options:
- yes
- it is not possible to tell
- no
A: The roof must be outside if a man is working on it.
The answer is yes.

[QUESTION] Premise: "Four people are walking along a city sidewalk."
Hypothesis: "While the one in the green hat talks on a cellphone."
Do we know that the hypothesis entailed by the premise?
A businessman is plotting to leave his submarine in the fall.
The answer is no.