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.

[EX Q]: Where did the bristol stool chart come from?
[EX A]: Which institution did the bristol stool chart come from?

[EX Q]: Who played marilla on anne of green gables?
[EX A]: Who played marilla on the 1919 film anne of green gables?

[EX Q]: Who won the soccer world cup this year?
[EX A]:
Who won the soccer world cup in 2018?