Question and answer: Q: Premise: "A couple holding hands walks past buses driving down a busy street as their shadows cast long on the sidewalk."
Hypothesis: "A crowd of people are riding the bus."
Do we know that the hypothesis entailed by the premise?
A: no
Explanation: One cannot walk past buses and be riding the bus simultaneously.

Question and answer: Q: Can we conclude from "A sailor is checking on a man who is sitting on the ground crying." that "A sailor is concerned for his crying friend."?
Options:
- yes
- no
- it is not possible to tell
A: it is not possible to tell
Explanation: Checking on a man does not imply that the sailor is concerned or that the man is his friend.

Question and answer: Q: Given the sentence "A man in jeans and a blue checked shirt heats metal using blacksmiths tools." can we conclude that "A man is casting metal jewelry."?
Options:
- yes
- it is not possible to tell
- no
A: it is not possible to tell
Explanation:
A man heats metal using blacksmith tools but that doesn't imply that he is casting metal jewelry.