QUESTION: Given the sentence "Two children wearing striped sweaters and black pants tussle outdoors near a play set." is it true that "The twin boys are fighting over who gets to throw the ball next."?

Let's solve it slowly: Children are not always boys. Two children playing are not necessarily twins. Tussling doesn't imply fighting over who gets to throw the ball.
The answer is it is not possible to tell.

[QUESTION] Can we conclude from "Law enforcement standing in a doorway." that "The police are here to arrest the fugitive."?
Options:
- yes
- no
- it is not possible to tell
Law enforcement can be on the scene whether or not they are there to arrest the fugitive.
The answer is it is not possible to tell.

Q: Premise: "A man riding a wakeboard on a lake."
Hypothesis: "A man is having lots of fun on the wakeboard."
Do we know that the hypothesis entailed by the premise?
A: Just because he is riding a wake board does not mean he is having lots of fun and one can have fun without a wake board.
The answer is it is not possible to tell.

QUESTION: Premise: "A man grabs the end of a set of bagpipes while another man plays."
Based on this premise, can we conclude that the hypothesis "A man enjoys playing music." is true?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: It is not clear which man enjoys the music. One can also play music without enjoying it.
The answer is it is not possible to tell.

[QUESTION] Test for natural language inference.
Premise: "Two dogs race across the track."
Hypothesis: "The dogs are running after a 3rd dog."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
The dogs do not have to be running after another dog to be racing.
The answer is it is not possible to tell.

Q: Can we conclude from "A tri-colored dog jumps and catches a pink frisbeen that a man in shorts has thrown." that "A man and a dog are playing with a frisbee."?
Options:
- yes
- no
- it is not possible to tell
A:
A dog jumps and catches a pink frisbee that a man has thrown can be concisely stated as a man and dog are playing with a frisbee.
The answer is yes.