You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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'.

Sentence: Jack played basketball for an hour after school, after which he was very tired. 
Question: How long did Jack play basketball?
Solution: Yes.
Why? The answer to this question (an hour)  lies in its text.

New input: Sentence: The Serbian, who beat Tsonga in the 2008 Australian Open final, ended the dream run of Australian 18-year-old Bernard Tomic. 
Question: How often had the Serbian beat Tsonga before?
Solution:
Yes.