In this task, you're given an ambiguous question (which can be answered in more than one way). Your task is to write a question that clarifies the given question in such a way that the generated question has one unique answer.

[Q]: Who has the best winning percentage in nfl history?
[A]: What team has the best regular season winning percentage in NFL history?


[Q]: Who wrote the screenplay for harry potter movies?
[A]: Who wrote the screenplay for Harry Potter movies 1-4 and 6-8?


[Q]: Where does the saying all quiet on the western front come from?
[A]:
What book does the saying all quiet on the western front come from?