Q: Given the sentence "A woman is singing and playing the piano." is it true that "At what appears to be a concert or event."?
A: A woman is singing and playing the piano in a band.
The answer is it is not possible to tell.

Q: Given the sentence "A woman is jumping over a hurdle on a track in front of a grassy field with people on it." is it true that "The woman is competing in the olympics."?
A: Jumping over hurdles does not mean she is competing in the Olympics.
The answer is it is not possible to tell.

Q: Test for natural language inference.
Premise: "A woman is placing a bike helmet on a little girl."
Hypothesis: "A woman takes the helmet off the little girl."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: Placing a helmet on someone is the opposite of taking the helmet off of him or her.
The answer is no.

Q: Given the sentence "Young people practice some form of martial arts." can we conclude that "Young men practice some form of martial arts."?
Options:
- yes
- it is not possible to tell
- no
A:
The people don't all have to be men and might be women too.
The answer is it is not possible to tell.