Q: Premise: "Boys splash in the muddy puddle in the grass."
Hypothesis: "Boys sit in school."
Do we know that the hypothesis entailed by the premise?
A: One cannot sit and splash at the same time. One cannot be in a muddy puddle and in school simultaneously.
The answer is no.

Q: Test for natural language inference.
Premise: "There is a couch sitting on grass with a girl in jeans and light brown hair on it."
Hypothesis: "A girl is taking a nap on the couch outside."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: Not all grass is outside. One may sit on a couch without taking a nap.
The answer is it is not possible to tell.

Q: Given the sentence "A young man playing the piano." can we conclude that "The young man is playing piano in front of an audience."?
Options:
- yes
- it is not possible to tell
- no
A: He could have been playing the piano by himself at his house without being in front of an audience.
The answer is it is not possible to tell.

Q: If "A young male holding a fishing pole." does that mean that "A young man prepares to cast his line on the lake."?
Options:
- yes
- it is not possible to tell
- no
A:
Just because you have a fishing pole doesn't always mean you are preparing to cast your line unto a lake.
The answer is it is not possible to tell.