Q: Premise: "A woman sits on the beach with two dogs."
Hypothesis: "The woman is watching the sun set."
Do we know that the hypothesis entailed by the premise?
A: Watching a sun set is not the main reason you go to a beach.
The answer is it is not possible to tell.

Q: Premise: "A man is eating a piece of corn on the cob."
Hypothesis: "The man is at a picnic."
Do we know that the hypothesis entailed by the premise?
A: A man is eating a piece of corn on the cob does not indicate that he is at a picnic.
The answer is it is not possible to tell.

Q: Given the sentence "Two men climb up a waterfall using a rope while wearing shorts and hard hats." can we conclude that "The men have nothing on their heads."?
Options:
- yes
- it is not possible to tell
- no
A: The men can't have bare heads and also wear hard hats.
The answer is no.

Q: If "A person in a red helmet riding a bike." does that mean that "A person rides a bike."?
Options:
- yes
- it is not possible to tell
- no
A:
A person in a red helmet riding a bike gives us more information about what the person is wearing.
The answer is yes.