Part 1. 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'.
Part 2. Example
Sentence: Jack played basketball for an hour after school, after which he was very tired. 
Question: How long did Jack play basketball?
Answer: Yes.
Explanation: The answer to this question (an hour)  lies in its text.
Part 3. Exercise
Sentence: There were a couple times that the family dog, Mika, has tried to take Joey from Marsha and eat him!. 
Question: How long does it take Mika to try to eat Joey?
Answer:
Yes.