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: Where did dorothy live in the wizard of oz?

SOLUTION: In what state does Dorothy live in the Wizard of Oz?

PROBLEM: Who played marilla on anne of green gables?

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

PROBLEM: Who played nelson mandela in the long walk to freedom?

SOLUTION:
Who plays 7-9 year old Nelson Mandela in the movie Mandela: Long Walk to Freedom?