QUESTION: Given the sentence "A greeting between old friends." is it true that "A greeting between people who have been friends a long time."?

Let's solve it slowly: Old friends do not have to be people who have been friends a long time.
The answer is it is not possible to tell.

[QUESTION] Test for natural language inference.
Premise: "A lady in a sparkly dress is playing guitar and singing into a microphone."
Hypothesis: "A lady in a dress playing a guitar and singing pixies songs into a microphone."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A lady singing into a microphone need not necessarily sing Pixies songs.
The answer is it is not possible to tell.

Q: Given the sentence "A man in a black shirt picks up trash on the side of a road." is it true that "A man is eating garbage in mcdonalds."?
A: Man cannot pick up trash and be eating garbage at same time.
The answer is no.

QUESTION: Premise: "This image shows a girl wearing her hair in a bun in a gray shirt and white vest."
Hypothesis: "A human with hair."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: If a girl is wearing a bun she is considered to have hair.
The answer is yes.

[QUESTION] Premise: "A man skateboarding up a ramp."
Based on this premise, can we conclude that the hypothesis "The man is watching tv." is true?
Options:
- yes
- it is not possible to tell
- no
Person skateboarding can not be watching TV at the same time.
The answer is no.

Q: Test for natural language inference.
Premise: "Two children are riding horses over sand near a white fence."
Hypothesis: "Children are riding horses in the grass."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A:
Children cannot ride horses on sans at the same moment they are in the grass.
The answer is no.