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]: Which channel in youtube has the most subscribers?
[A]: What was the Youtube channel with the most subscribers as of December 23, 2013?


[Q]: Who owns the clift hotel in san francisco?
[A]: Who first owned the Clift Royal Sonesta Hotel?


[Q]: When did the fourth of july become a federal holiday?
[A]:
When did Fourth of July become a holiday for federal employees?