Student asked: Given the sentence "A man plays guitar in the dark." can we conclude that "A man strums his guitar."?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. A man playing his guitar must be one who strums it at some point. The answer is yes.

Student asked: If "A man in a suit is awaiting mass transit." does that mean that "A man about to ride mass transit for the first time."?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. We don't know if it is the first time the man rode a train. The answer is it is not possible to tell.

Student asked: Premise: "Three men in safety vests work along a roadside."
Hypothesis: "Some men are fixing a giant pothole."
Do we know that the hypothesis entailed by the premise?
Teacher's response: Let's think. Three men in safety vests working along a roadside does not imply the men are fixing a giant pothole. The answer is it is not possible to tell.

Student asked: Given the sentence "Two people." can we conclude that "A man and a woman are dancing in a city."?
Options:
- yes
- it is not possible to tell
- no
Teacher's response:
Let's think. These two people did not know how to dance and never tried to at any time. The answer is no.