Student asked: Can we conclude from "A man is watching another man drill a hole in a pipe." that "The men are using an axe."?
Options:
- yes
- no
- it is not possible to tell
Teacher's response: Let's think. Can not be using and axe and drill a hole at the same time. The answer is no.

Student asked: Premise: "6 workers in bright clothing are working together."
Hypothesis: "6 workers in bright tight clothing are working together."
Do we know that the hypothesis entailed by the premise?
Teacher's response: Let's think. One can't imply that just because the clothing is bright means that it is tight as well. The answer is it is not possible to tell.

Student asked: Premise: "A riot squad forms a line next to an over turned car."
Based on this premise, can we conclude that the hypothesis "A group of kids watch movies on a couch." is true?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. A riot squad is not a group of kids. If a group watches movies they are probably not forming a line. The answer is no.

Student asked: Can we conclude from "Two brown-skinned people with headgear examine papers." that "There are people singing."?
Options:
- yes
- no
- it is not possible to tell
Teacher's response:
Let's think. One cannot be singing and examining papers at the same time. The answer is no.