QUESTION: Premise: "Two young men are standing on the sidewalk talking to each other."
Hypothesis: "Two men are talking to one another."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly: Two young men and two men refer to the same people. Talking to one another is paraphrasing talking to each other.
The answer is yes.

[QUESTION] Test for natural language inference.
Premise: "Two young men on bicycles one is doing a flip while the other watches."
Hypothesis: "Two guys are shooting a bike trick video."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A young man watching another doing a flip on a bicycle does not imply that he is shooting a bike trick video.
The answer is it is not possible to tell.

Q: Given the sentence "The lady in the blue shirt is riding a bike across a bridge." is it true that "The lady is riding a bike."?
A: In order for a lady to ride her bike across a bridge she must be riding her bike.
The answer is yes.

QUESTION: Test for natural language inference.
Premise: "Asian man riding a scooter watches for traffic."
Hypothesis: "The man is inside."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: The man is not riding a scooter if he is inside.
The answer is no.

[QUESTION] Given the sentence "Two men are talking a flower stand." can we conclude that "Two men punching each other."?
Options:
- yes
- it is not possible to tell
- no
Two men cannot be talking and punching each other at the same time.
The answer is no.

Q: Premise: "Three female dancers are in front of a pale curtain with a single knee raised and their heads dropped back."
Hypothesis: "The females each have one head."
Do we know that the hypothesis entailed by the premise?
A:
Females heads that drops back simply means the females each have one head.
The answer is yes.