Q: Given the sentence "A boy is standing in the surf at the beach." is it true that "A boy stands at the beach waiting for someone."?
A: You can stand at a beach and not be waiting for someone.
The answer is it is not possible to tell.

QUESTION: Test for natural language inference.
Premise: "Several people are crossing a street near a yield sign."
Hypothesis: "Some people are playing soccer in the park."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: Crossing a street and playing soccer in the park cannot occur simultaneously.
The answer is no.

[QUESTION] Can we conclude from "Two men in orange and white jumpsuits are free falling." that "Two men are falling through the sky."?
Options:
- yes
- no
- it is not possible to tell
Falling through the air is a way to describe free falling.
The answer is yes.

Q: Premise: "A group of people camp in tents near some trees."
Hypothesis: "A group in tents by a small thicket of trees are actually wizards and witches."
Do we know that the hypothesis entailed by the premise?
A: If tents are wizards a witches people cannot camp in tents.
The answer is no.

QUESTION: Premise: "A bicyclist is riding through a crowd of people."
Hypothesis: "A person sitting alone with his bike."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: Riding and sitting are different actions. Alone and a crowd of people are contradictions.
The answer is no.

QUESTION: If "A man grilling and another man in blue shirt holding a beer." does that mean that "Two men are spending time together."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly:
When one man and another are holding a beer they are considered two men spending time with each other.
The answer is yes.