Student asked: Premise: "Man building something in a murky river."
Based on this premise, can we conclude that the hypothesis "While wearing a hat." is true?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. A park ranger is destroying a beaver dam in the murky river. The answer is no.

Student asked: Can we conclude from "A man in a black vest and white button-up sits with a woman in a striped sweatshirt." that "The conversation between the male and female looks pleasant."?
Options:
- yes
- no
- it is not possible to tell
Teacher's response: Let's think. It didn't say anything about conversation between the male and female. The answer is it is not possible to tell.

Student asked: Premise: "An authority officer is passing through gates with a vehicle."
Hypothesis: "An empty street."
Do we know that the hypothesis entailed by the premise?
Teacher's response: Let's think. A street can't be empty if an authority officer is passing through with a vehicle. The answer is no.

Student asked: Given the sentence "A young boy is struggling to pick up a large pumpkin." is it true that "An elf is putting a present under the christmas tree."?
Teacher's response:
Let's think. It cannot be an elf and a boy at the same time and one cannot be struggling to pick up a pumpkin while the other is putting a present under the Christmas tree. The answer is no.