[QUESTION] Test for natural language inference.
Premise: "A young boy in shorts and a t-shirt chasing two birds while a man in shorts and t-shirt follows a few steps behind."
Hypothesis: "A father watches his son chase a bird."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
It could be a father and son or an uncle and his nephew.
The answer is it is not possible to tell.

[QUESTION] Test for natural language inference.
Premise: "A dog in water with its head cocked to the side looking at a ball."
Hypothesis: "A dog is playing in the water."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A dog in water is not necessarily playing in the water.
The answer is it is not possible to tell.

[QUESTION] Given the sentence "Two men singing in a dark club." can we conclude that "The men are doing karaoke at the club."?
Options:
- yes
- it is not possible to tell
- no
The men singing must not be doing Karaoke at the club.
The answer is it is not possible to tell.

[QUESTION] Premise: "A boy is walking on a floor covered in graffiti."
Hypothesis: "The boy is sitting in the grass."
Do we know that the hypothesis entailed by the premise?
The boy cannot be walking on a floor covered in graffiti and sitting in the grass simultaneously.
The answer is no.