TASK DEFINITION: The answer will be 'yes' if the provided sentence contains an explicit mention that answers the given question. Otherwise, the answer should be 'no'. Instances where the answer is implied from the sentence using "instinct" or "common sense" (as opposed to being written explicitly in the sentence) should be labeled as 'no'.
PROBLEM: Sentence: The most powerful families thus carved out for themselves whole regions that were to become the fiefdoms of Japanese feudalism.
Question: How long did it take families to become powerful enough to do this?

SOLUTION: No.

PROBLEM: Sentence: Shortly before she left, Tasha said, ""You steal from life for art, Bernardo.
Question: Did Tasha yell at Bernardo for the rest of the day?

SOLUTION: No.

PROBLEM: Sentence: The Persian Gulf War destroyed much of the country's medical infrastructure, according to a report by the World Health Organization.
Question: What happened after the infrastructure was destroyed?

SOLUTION:
No.