Q: Test for natural language inference.
Premise: "An elderly man in a blue hat sitting on a cement wall while looking at the ground."
Hypothesis: "A man is sad and is looking at the ground."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: Not all elderly man in a blue hat sitting on a cement wall is sad.
The answer is it is not possible to tell.

Q: Given the sentence "A brown furry dog is biting a no hair brown dog." can we conclude that "A brown dog licked another dog."?
Options:
- yes
- it is not possible to tell
- no
A: The dog biting cannot be the one that is licking the same time.
The answer is no.

Q: Premise: "A man is doing a trick on a skateboard in a covered area."
Hypothesis: "The man is sheltered from the sun."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
A: If the area is covered then it is sheltered from the sun.
The answer is yes.

Q: Can we conclude from "A crowd of women are involved in an advocacy walk." that "Women march for women's rights."?
Options:
- yes
- no
- it is not possible to tell
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Not all advocacy walks attended by women are marches for women's rights.
The answer is it is not possible to tell.