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 sings the song spirit in the sky?

SOLUTION: Who sings the original song "Spirit in the Sky" from 1969?

PROBLEM: Where did let them eat cake come from?

SOLUTION: What country did the phrase "Let them eat cake" originate?

PROBLEM: Who is the successor to the british throne?

SOLUTION:
Which person is the successor to the british throne?