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'.
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Question: Sentence: At this early stage in its history Japan was already (for the most part) only nominally ruled by the emperor.
Question: Will the emperor always be in charge of Japan?

Answer: No.

Question: Sentence: Allan crouched over his desk once more, pen in hand and mind blank.
Question: How long did it take for Allan to crouch over his desk?

Answer: No.

Question: Sentence: On London's Stock Exchange, Reuters shares rose five pence to 913 pence ($14.43).
Question: How long is the stock exchange open?

Answer:
No.