QUESTION: Given the sentence "One woman and two men wearing life vests rowing a small boat down a marsh lined river." is it true that "The people are not using their life jackets."?

Let's solve it slowly: If you are not using the life jackets why are you wearing them.
The answer is no.

[QUESTION] Test for natural language inference.
Premise: "Two adults and two children sitting on rocks for a picture."
Hypothesis: "A group of people are outside."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Two adults and two children are people and sitting on rocks indicates that they are outside.
The answer is yes.

Q: Premise: "A little boy spays a hose at his brother who is on the other side of a window."
Hypothesis: "A boy spays his brother with a hose."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
A: Spraying his brother on the other side of a window does not that he spays his brother directly with a hose.
The answer is it is not possible to tell.

QUESTION: Can we conclude from "A rodeo rider doing a vertical trick on a brown horse as an audience looks on." that "A man is doing a trick with a bull in front of the audience."?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: One cannot be doing a vertical tric on a brown horse and doing a trick with a bull at the same time.
The answer is no.

[QUESTION] Premise: "Four children are playing on a hill of sand."
Based on this premise, can we conclude that the hypothesis "The children are in the sand." is true?
Options:
- yes
- it is not possible to tell
- no
The children are playing at the foot of a hill in sand.
The answer is yes.

Q: If "A teenage boy gets a lot of air on his bike at a bike course." does that mean that "A teenage boy is flying in the air on his bike."?
Options:
- yes
- it is not possible to tell
- no
A:
Gets a lot of air is another way of saying flying in the air.
The answer is yes.