QUESTION: Premise: "A man stands with a guitar and music stand in an empty room."
Hypothesis: "The man is a music teacher."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly: Standing with an instrument and music stand does not imply one is a teacher.
The answer is it is not possible to tell.

QUESTION: Given the sentence "Two dark-haired girls are in a crowd." is it true that "Two sisters walk through a crowd."?

Let's solve it slowly: Not all girls are sisters and nothing says they are walking through the crowd.
The answer is it is not possible to tell.

QUESTION: Premise: "A man on a beach building a sand castle."
Hypothesis: "The man is playing with his kids."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly:
Not all men building sand castles are doing it with kids.
The answer is it is not possible to tell.