[QUESTION] Given the sentence "A young smiling female on a swing." is it true that "Everyone is standing up."?
A young female is a single person and cannot be everyone.
The answer is no.

Q: Premise: "Two people riding a motorcycle through a very crowded street."
Based on this premise, can we conclude that the hypothesis "Rider is trying hit someone." is true?
Options:
- yes
- it is not possible to tell
- no
A: A rider is a single person and two people are a couple. Riding a motorcycle is a vehicle and you are not purposely trying to endanger anyone else where hitting someone you physically mean to do so.
The answer is no.

QUESTION: Premise: "A man with two ski poles stands near a mountaintop."
Based on this premise, can we conclude that the hypothesis "There maybe a man with two skis standing near a mountaintop." is true?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: A man having two ski poles does not necessarily also have two skis to go with them.
The answer is it is not possible to tell.

[QUESTION] Given the sentence "Three businessmen share drinks after a meeting." is it true that "The men are discussing in a meeting."?
After a meeting indicates that they are no more in a meeting.
The answer is no.

Q: Premise: "A woman in a purple shirt wearing sunglasses lays her head on her backpack."
Hypothesis: "The woman is swimming with sharks."
Do we know that the hypothesis entailed by the premise?
A: A woman who lays her head on her backpack is not swimming with sharks.
The answer is no.

[QUESTION] Premise: "Three men in horned helmets are standing beside each other."
Hypothesis: "Three men are wearing helmets."
Do we know that the hypothesis entailed by the premise?
To be in something is the same as to be wearing it.
The answer is yes.