Q: Can we conclude from "Father and son swimming." that "The two people are having fun."?
Options:
- yes
- no
- it is not possible to tell
A: Father and son swimming does not infer two people have fun.
The answer is it is not possible to tell.

Q: Premise: "Many birds are sitting on a concrete wall."
Hypothesis: "Many pigeons are sitting on a concrete wall."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
A: Not all birds are pigeons. There are many different types of birds that could be sitting on the wall.
The answer is it is not possible to tell.

Q: Given the sentence "A female athlete playing volleyball on the beach." is it true that "The olympic women's volleyball team practices."?
A: A female athlete does not have to be on the Olympic's women volleyball team.
The answer is it is not possible to tell.

Q: Premise: "A man with a hiking backpack on is standing in front of a lake with a forest in the background."
Hypothesis: "A man is hiking for his dead wife."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
A:
A hiker standing in front of a lake does not imply he is hiking for his dead wife.
The answer is it is not possible to tell.