Student asked: Premise: "An old man with white hair in a black suit taking a picture."
Based on this premise, can we conclude that the hypothesis "An old man is taking a photo of his newlywed son and daughter-in-law." is true?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. The fact that an old man is taking a picture does not tell us that the photo is of his newlywed son and daughter-in-law or of any other subject. The answer is it is not possible to tell.

Student asked: Test for natural language inference.
Premise: "Two men stop on the sidewalk to chat as a third passes by."
Hypothesis: "Two men talk in the board room."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Teacher's response: Let's think. Men cannot be in board room and on sidewalk at the same time. The answer is no.

Student asked: Premise: "A man in a green shirt and gray pants walking on a street and passing by a store."
Hypothesis: "The man is walking on a street."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. When walking on a street it is very likely that you will pass a store. The answer is yes.

Student asked: Given the sentence "A man with a shopping cart is selling wares on a busy city street." is it true that "A man with a shopping cart is selling wares on a busy city street during the night."?
Teacher's response:
Let's think. The man selling wares is not imply to be there during the night. The answer is it is not possible to tell.