Student asked: Given the sentence "A man looks on at his painting of the golden gate bridge." is it true that "A man is doing a painting of the eiffel tower."?
Teacher's response: Let's think. A man cannot do an eiffel tower painting and golden gate painting simultaneously. The answer is no.

Student asked: Premise: "A group of people waiting for the subway."
Hypothesis: "A group of people are getting ready to go to the club."
Do we know that the hypothesis entailed by the premise?
Teacher's response: Let's think. People getting ready to go to the club can not be waiting for the subway. The answer is no.

Student asked: Given the sentence "A man working with a machine." can we conclude that "A woman eats lunch in front of a machine."?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. A man is working with a machine which implies he is not a woman and also not eating in front of the machine. The answer is no.

Student asked: Premise: "A leashed dog holds its mouth open wide."
Hypothesis: "A dog is on a leash."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
Teacher's response:
Let's think. A dog on a leash is a paraphrase of a leashed dog. The answer is yes.