[QUESTION] Given the sentence "A person is waving some sort of light source around while standing on a patch of grass." is it true that "The person waves a flag on the patch of grass."?
Person either waves a flag or some sort of light source.
The answer is no.

Q: Premise: "A boy stands with three girls."
Hypothesis: "They are siblings."
Do we know that the hypothesis entailed by the premise?
A: Boys and girls can stand by each other without being siblings.
The answer is it is not possible to tell.

QUESTION: Test for natural language inference.
Premise: "Two men screaming in a white room."
Hypothesis: "Two men are sitting at a cafe table laughing."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: If men are screaming in a room they are not laughing at a cafe.
The answer is no.

[QUESTION] Premise: "A man standing in front of several cliff faces."
Hypothesis: "The man is taking a hike."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
The man on a hike could be doing a number of other things beside standing in front of cliff faces.
The answer is it is not possible to tell.

Q: Given the sentence "A bearded man in glass playing an acoustic guitar." can we conclude that "A man strumming a guitar."?
Options:
- yes
- it is not possible to tell
- no
A: Strumming a guitar does not infer any skill as playing a guitar would. Strumming is just making noise.
The answer is it is not possible to tell.

[QUESTION] Premise: "Three men pose for a picture at a trade show."
Based on this premise, can we conclude that the hypothesis "The men are walking to work." is true?
Options:
- yes
- it is not possible to tell
- no
One cannot pose for a picture while walking. A trade show is not work.
The answer is no.