[QUESTION] Given the sentence "A man wearing bmx gear and a helmet rides a bicycle on rocky terrain." is it true that "A guy is competing in a bicycle event."?
A man can wear BMX gear and ride a bike without competing in a bicycle event.
The answer is it is not possible to tell.

Q: If "An orchestra teacher is teaching his kids." does that mean that "The kids are playing music."?
Options:
- yes
- it is not possible to tell
- no
A: The orchestra teacher could be teaching while the children are not playing.
The answer is it is not possible to tell.

QUESTION: Test for natural language inference.
Premise: "A person is reaching out of a window in a high rise to pull on a rope pulley."
Hypothesis: "A person is nude while holding a rope."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: A person reaching out of a window to pull on a rope is not necessarily nude.
The answer is it is not possible to tell.

[QUESTION] Premise: "A man and girl sit on a bench while eating ice cream cones."
Hypothesis: "The couple sit together."
Do we know that the hypothesis entailed by the premise?
A MAN AND A GIRL IS TWO AND A COUPLE IS TWO.
The answer is yes.

Q: Can we conclude from "A child wearing a red sweatshirt is hanging upside down from a tree." that "The child is sitting under a tree."?
Options:
- yes
- no
- it is not possible to tell
A: The child cannot simultaneously be hanging in the tree and well as sitting under it.
The answer is no.

[QUESTION] Premise: "A man in a white outfit sings into a microphone."
Hypothesis: "The man is wearing a green outfit."
Do we know that the hypothesis entailed by the premise?
If a man is in a white outfit then he is not in a green outfit.
The answer is no.