Student asked: Premise: "A man in a black shirt is under a fire ball."
Based on this premise, can we conclude that the hypothesis "The man is in danger." is true?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. A man under a fire ball is not necessarily in danger. The answer is it is not possible to tell.


Student asked: Premise: "A couple is walking in a building."
Hypothesis: "People are late to work."
Do we know that the hypothesis entailed by the premise?
Teacher's response: Let's think. Not all couple walking in a building are late to work. The answer is it is not possible to tell.


Student asked: Given the sentence "A tennis player wearing a green shirt about to hit a ball with his racquet." is it true that "A tennis player is wearing a green shirt."?
Teacher's response: Let's think. A tennis player plays his sport with a ball and racquet. The answer is yes.


Student asked: If "A boy jumps into a pool while lifeguards watch." does that mean that "A boy sunbathes at the pool."?
Options:
- yes
- it is not possible to tell
- no
Teacher's response:
Let's think. One cannot jump into a pool and sunbathe at the pool simultaneously. The answer is no.