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 is the highest ranked golfer in the world?

A: Who is the highest ranked golfer in the world on February 19, 2017?
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Q: Who constructed the suez canal and when was it finished?

A: Who is the company that constructed the suez canal?
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Q: When did the voting age change from 21 to 18?

A:
When did the debate begin to lower the voting age from 21 to 18?
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