TASK DEFINITION: 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.
PROBLEM: Who presented the first top of the pops?

SOLUTION: Who presented the first ever top of the pops?

PROBLEM: Who has the best winning percentage in nfl history?

SOLUTION: What team has the best regular season winning percentage in NFL history?

PROBLEM: When was don't fear the reaper released?

SOLUTION:
When was Blue Oyster Cult's song (Don't Fear) the Reaper originally released?