Q: Given the sentence "A dog rolls on his back in the grass." can we conclude that "A dog is playing in the grass on a warm summer day."?
Options:
- yes
- it is not possible to tell
- no
A: A dog rolling in the grass does not necessarily imply that it is on a summer day.
The answer is it is not possible to tell.

Q: Premise: "A person with a purple head covering and purple shirt is standing outside a restaurant."
Hypothesis: "A person is waiting near a door."
Do we know that the hypothesis entailed by the premise?
A: The person is waiting near a door because he/she is standing outside a restaurant.
The answer is yes.

Q: Premise: "Maintenance worker fixing something for somebody."
Hypothesis: "Someone requested the worker fix the broken item."
Do we know that the hypothesis entailed by the premise?
A: The fact that a maintenance worker is fixing something doesn't imply someone requested the worker fix the broken item.
The answer is it is not possible to tell.

Q: If "A stringed quartet playing with a pianist inside and old room with stone walls." does that mean that "People are playing instruments."?
Options:
- yes
- it is not possible to tell
- no
A:
People who are a stringed quartet are playing with a pianist.
The answer is yes.