Student asked: Given the sentence "Two women talk and laugh while people walk by." is it true that "Two women argue at the market."?
Teacher's response: Let's think. The two women don't argue at the market if they talk and laugh while people walk by. The answer is it is not possible to tell.


Student asked: Test for natural language inference.
Premise: "A man with dreadlocks is playing with the hair of a woman who is sitting on a chair on a cobblestone street."
Hypothesis: "A couple are sitting in the old city."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Teacher's response: Let's think. A man playing with the hair of a woman on a cobblestone street doesn't necessarily imply couple and doesn't necessarily imply old city. The answer is it is not possible to tell.


Student asked: Given the sentence "A baby is clinging to his mother." can we conclude that "The baby is wearing a purple bib."?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. A baby clinging to his mother in not necessarily wearing a purple bib. The answer is it is not possible to tell.


Student asked: Can we conclude from "A white man with a mustache is playing guitar." that "The man is playing in a concert."?
Options:
- yes
- no
- it is not possible to tell
Teacher's response:
Let's think. A man playing guitar is not assumed to be in a concert. The answer is it is not possible to tell.