Student asked: Given the sentence "Brown dog crouching in grass looking up." is it true that "A dog is lying on the sofa."?
Teacher's response: Let's think. Either the dog is crouching in grass or lying on a sofa. The dog cannot occupy both places at one time. The answer is no.

Student asked: Premise: "War reenactors fire a cannon."
Hypothesis: "The war reenactors are reenacting the battle of gettysburg for their local community."
Do we know that the hypothesis entailed by the premise?
Teacher's response: Let's think. Not every group of reenactors is doing the Battle of Gettysburg. The answer is it is not possible to tell.

Student asked: Given the sentence "The man with long hair is walking along a storm drain." can we conclude that "A person outside on the street."?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. The person must be on the street if he is walking along a storm drain. The answer is yes.

Student asked: Given the sentence "A man in a white shirt and striped tie making a speech at a podium." can we conclude that "The man is in front of people talking."?
Options:
- yes
- it is not possible to tell
- no
Teacher's response:
Let's think. In front of people talking is a rephrase of making a speech. The answer is yes.