instruction:
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.
question:
Who came up with the five factor model?
answer:
Who came up with the initial five factor model?


question:
Who has won the most album of the year grammys?
answer:
Which engineer/mixer has won the most album of the year grammys?


question:
Who is the actor that plays professor snape?
answer:

Who is the actor that plays Professor Severus Snape as an adult?