[QUESTION] Given the sentence "Two greyhounds race." is it true that "The greyhounds are sleeping."?
The greyhounds cannot race and be sleeping at the same time.
The answer is no.

Q: Test for natural language inference.
Premise: "A little girl wearing a bathing suit while eating a watermelon in the water."
Hypothesis: "The girl is waiting to go swimming."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: Eating a watermelon in a bathing suit does not mean she is waiting to go swimming.
The answer is it is not possible to tell.

QUESTION: Premise: "A motorcycle policeman has his lights on."
Based on this premise, can we conclude that the hypothesis "On the side of him is an advertisement for a phone sex hot-line." is true?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: A motorcycle cop has a phone sex number on his cruiser.
The answer is yes.

[QUESTION] Given the sentence "A fireman climbing on charred ceiling beams of a burned out structure." is it true that "The fire fighter has his visor down."?
A fireman climbing on a charred ceiling beam need not necessarily be having his visor down.
The answer is it is not possible to tell.

Q: Test for natural language inference.
Premise: "A man in a black tank top with his head leaning back and a rod in his mouth is about to light the rod on fire with the two lit fire sticks in his left hand."
Hypothesis: "The man is a performer."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: The man is a performer because he is doing tricks with a rod in his mouth on fire and in his hands.
The answer is yes.

[QUESTION] Test for natural language inference.
Premise: "A sidewalk scene with a girl in white shirt biting her thumb."
Hypothesis: "A starving girl eats her thumb to get nutrients."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Biting her thumb is not the same as eating her thumb.
The answer is no.