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 Input:
The voice of buzz lightyear in toy story?

Ex Output:
Who is the voice of Buzz Lightyear in the Toy Story films?


Ex Input:
Who achieved a victory at the battle of marathon?

Ex Output:
What country achieved a victory at the battle of marathon?


Ex Input:
What is a zebra crossing called in the uk?

Ex Output:

What is a zebra crossing called in the uk when it is black and white?