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 actor who plays jacob in twilight?

A: Who is the actor who plays jacob in the 2008 twilight film?
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Q: What type of radiation is used in x rays?

A: What general type of radiation is used in x rays?
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Q: When did the brown vs board of education end?

A:
In which year did the case of Brown vs Board of Education end?
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