[QUESTION] Test for natural language inference.
Premise: "Children play in the dark water fountain near the white triumphal arch while adults sit on the steps."
Hypothesis: "Children are playing cops and robbers by a water fountain."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Children playing does not mean they are playing cops and robbers.
The answer is it is not possible to tell.

[QUESTION] Test for natural language inference.
Premise: "A boy hangs out of a passing taxi cab window."
Hypothesis: "The boy is happy he is in a cab."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Hanging out of a taxi does not necessarily indicate that the boy is happy.
The answer is it is not possible to tell.

[QUESTION] Test for natural language inference.
Premise: "Four children in sleeping bags sleep on a floor."
Hypothesis: "Four kids are riding a roller coaster."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Children in sleeping bags sleeping on a floor can't be riding a roller coaster.
The answer is no.

[QUESTION] Premise: "Doctors wearing protective gear are performing surgery."
Hypothesis: "The doctors were performing their first surgery."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no

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
Doctors wearing protective gear are not necessarily performing their first surgery.
The answer is it is not possible to tell.