Q: Given the sentence "Four people are cavorting on the rocks at a river's edge." is it true that "Five people are going deep-sea diving on their day off."?
A: One cannot be cavorting on the rocks while diving in the deep sea.
The answer is no.

QUESTION: Premise: "These five people are seated on steps outdoors."
Hypothesis: "The people lay around on rafts."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly: People can not be seated on steps and lay on rafts simultaneously.
The answer is no.

[QUESTION] Premise: "Two men painting art on a wall."
Hypothesis: "Two artist painting art on a wall on a quiet city street."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
The wall doesn't necessarily have to be on a city street.
The answer is it is not possible to tell.

Q: Test for natural language inference.
Premise: "Many young dark complected children raising their arms in the air in excitement."
Hypothesis: "The children were excited."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: Children raising their arms in the air in excitement is another way of saying the children were excited.
The answer is yes.

QUESTION: Test for natural language inference.
Premise: "A bike rider flipping over a black ramp."
Hypothesis: "A bike rider doing a bmx trick in a competition."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: A bike rider can be doing tricks but not be in a competition.
The answer is it is not possible to tell.

QUESTION: Given the sentence "A group of men sitting on the roof of a building." is it true that "A group of men are in a basement."?

Let's solve it slowly:
The group of men are on the roof not in the basement.
The answer is no.