Student asked: Premise: "Two men talk about an unidentified man in a photograph in front of an audience."
Based on this premise, can we conclude that the hypothesis "The two men are alone." is true?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. Two men cannot talk in front of an audience and be alone at the same time. The answer is no.

Student asked: Premise: "A man making cement risers."
Hypothesis: "A man making cement risers for a new apartment building."
Do we know that the hypothesis entailed by the premise?
Teacher's response: Let's think. A man making cement risers does not imply that he making cement risers for a new apartment building. The answer is it is not possible to tell.

Student asked: Given the sentence "Two men are looking through the solar telescopes." is it true that "The men are using binoculars to spy on the neighbor."?
Teacher's response: Let's think. Men who are using binoculars to secreting spy on a neighbor cannot simultaneously be using solar telescopes. The answer is no.

Student asked: Given the sentence "A dog swims in the aqua water." is it true that "The dog is in a lake."?
Teacher's response:
Let's think. Not all aqua water is in a lake but could also be an ocean or river. The answer is it is not possible to tell.