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'.

Example input: Sentence: Jack played basketball for an hour after school, after which he was very tired. 
Question: How long did Jack play basketball?
Example output: Yes.
Example explanation: The answer to this question (an hour)  lies in its text.
Q: Sentence: Dam Square was landlocked for the first time in its history. 
Question: How long was it not landlocked?
A:
Yes.