QUESTION: Premise: "A crowd of people are walking in an asian-style city."
Hypothesis: "The people are walking together."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly: A crowd of people my be walking it does not mean they are walking together.
The answer is it is not possible to tell.

QUESTION: If "A very graceful ice skater." does that mean that "The villain is stalking his prey."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: A villain does not have to be a graceful ice skater.
The answer is no.

QUESTION: Premise: "A small group of people are at a rollerskating rink."
Hypothesis: "A group of people are tying roller skates on at a rollerskating rink."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly:
People can be doing other things than tying roller skates when they are at the rink.
The answer is it is not possible to tell.