[QUESTION] Test for natural language inference.
Premise: "A man in overalls hides his face with his hand from the camera as he sits with another man on a muddy hill."
Hypothesis: "A man in overalls hides his face."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Sentence mirrors sentence one as the man hides his face in both sentences.
The answer is yes.

Q: If "Little boy pushing another little boy up the pole." does that mean that "One boy is trying to climb the pole."?
Options:
- yes
- it is not possible to tell
- no
A: It sounds like both the boys are trying to climb the pole and not just one boy.
The answer is it is not possible to tell.

QUESTION: Test for natural language inference.
Premise: "A man is doing a trick with a sword and allowing the sword into his throat."
Hypothesis: "A man is on a stage performing tricks."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: A man is doing a trick with a sword and allowing the sword into his throat does not indicate that he is on a stage performing tricks.
The answer is it is not possible to tell.

[QUESTION] If "A woman in a gray uniform participates in roller derby." does that mean that "The woman is good at roller derby."?
Options:
- yes
- it is not possible to tell
- no
Simply participating in roller derby doesn't mean that the participant is good or bad at the activity.
The answer is it is not possible to tell.

Q: If "A young man is starting a barbecue while drinking beer in a wooded area." does that mean that "A man is making food for his family."?
Options:
- yes
- it is not possible to tell
- no
A: A man starting a barbecue could be making food for a variety of people not limited to family.
The answer is it is not possible to tell.

[QUESTION] Premise: "A man with black hair has a yellow pencil behind his ear."
Hypothesis: "A man needs a pencil for the exam."
Do we know that the hypothesis entailed by the premise?
The purpose for which the man intends to use the pencil is unknown and may not be for an exam.
The answer is it is not possible to tell.