Given the task definition, example input & output, solve the new input case.
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: Sentence: Jack played basketball for an hour after school, after which he was very tired. 
Question: How long did Jack play basketball?
Output: Yes.
The answer to this question (an hour)  lies in its text.

New input case for you: Sentence: These rangers were too well trained to appear openly curious about their captain's guest. 
Question: How often do the rangers appear curious?
Output:
No.