Student asked: Premise: "Four people sit on the steps of the entrance to a building."
Hypothesis: "Four people sit on the steps of the entrance of a building waiting for their friend."
Do we know that the hypothesis entailed by the premise?
Teacher's response: Let's think. People sitting on steps are not necessarily waiting for a friend. The answer is it is not possible to tell.

Student asked: Premise: "A mexican man unfolds a large piece of paper at a birthday celebration."
Based on this premise, can we conclude that the hypothesis "A man is unfording paper at a birthday party." is true?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. A mexican man is a man. Unfolds a large piece of paper is a rephrasing of unfolding paper. And a party implies a celebration. The answer is yes.

Student asked: Premise: "A man and a young boy using screwdrivers at the base of a door."
Hypothesis: "A boy is helping fix a door."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. Tools a boy can use to fix a door can include a screwdrivers. The answer is yes.

Student asked: Premise: "Someone showing a woman how to use a self checkout machine."
Based on this premise, can we conclude that the hypothesis "A woman buying groceries." is true?
Options:
- yes
- it is not possible to tell
- no
Teacher's response:
Let's think. It is not told what she bought; it may not be groceries. The answer is it is not possible to tell.