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:
Who was looking for a heart in the wizard of oz?

Ex Output:
Who is the character that was looking for a heart in the wizard of oz?


Ex Input:
Who played the role of badri in badrinath ki dulhania?

Ex Output:
Which actor played Badri in Badrinath Ki Dulhania?


Ex Input:
Who were the first european to reach the americas and when did they arrive?

Ex Output:

Who were the first Europeans to reach the Americas?