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.
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Question: When did the voting age change from 21 to 18?

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


Question: Where are most of the us oil refineries located?

Answer: Where with respect to geographical features are most of the us oil refineries located?


Question: Who ran against eisenhower in the 1952 election?

Answer:
Who ran against eisenhower in the 1952 presidential  election?