[Q] Given the sentence "A skateboarder doing a trick off a quarter pipe." is it true that "A girl is playing in flour."?
[A] A skateboarder can't do tricks in flour while playing in it.
The answer is no.

[Q] Test for natural language inference.
Premise: "A dog running on grass."
Hypothesis: "A dog runs for an hour."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
[A] The dog may not be running for an hour. Most dogs tire before then.
The answer is it is not possible to tell.

[Q] Can we conclude from "Two men dressed up share a toast." that "Two women dressed up share a toast."?
Options:
- yes
- no
- it is not possible to tell
[A] The two cannot be both men and women at the same time.
The answer is no.