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 played marilla on anne of green gables?

SOLUTION: Who played marilla on the 1919 film anne of green gables?

PROBLEM: What books of the bible are included in the torah?

SOLUTION: What are the individual books of the bible that are included in the torah?

PROBLEM: Who won the us open 2017 golf tournament?

SOLUTION:
Who won the men's 2017 US Open golf tournament?