[QUESTION] Premise: "The black dog is in the water on the shore."
Hypothesis: "The black dog is training for water rescue."
Do we know that the hypothesis entailed by the premise?
The dog is in the water on the shore but it doesn't mean he is training for water rescue.
The answer is it is not possible to tell.

[QUESTION] Can we conclude from "A children with a helmet riding his bicycle." that "A child rides a bike."?
Options:
- yes
- no
- it is not possible to tell
Children is meant to be child because A is singular. Bike is a short term for bicycle. Riding is the suffix form of rides.
The answer is yes.

[QUESTION] Premise: "A man in black is eating a baked good near two elderly men."
Hypothesis: "A man in black is eating a pizza."
Do we know that the hypothesis entailed by the premise?
A man is eating by himself and not with two elderly men.
The answer is no.

[QUESTION] Test for natural language inference.
Premise: "A postal carrier with a big smile stands on the sidewalk with his cart of mail."
Hypothesis: "A postal carrier with a big smile  is standing on the sidewalk delivering mail."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
The fact that the postal carrier has mail does not mean that said mail is being delivered.
The answer is it is not possible to tell.