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: Where is the x factor final 2017 filmed?

SOLUTION: In what building is the x factor final 2017 filmed?

PROBLEM: Who does tracy end up with in hairspray?

SOLUTION: Who does tracy end up with in the hairspray musical?

PROBLEM: Who played dumbledore in the harry potter movies?

SOLUTION:
Who played dumbledore in the first two harry potter movies?