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.

When did the movie knock knock come out?
When did the short animated film knock knock come out featuring Woody Woodpecker?

Where did the bristol stool chart come from?
Which institution did the bristol stool chart come from?

Who were the leaders of the battle of chickamauga?

Who was the Confederate leader at the Battle of Chickamauga?