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 sings in spite of ourselves with john prine?

Ex Output:
Who sings on the album spite of ourselves with john prine?


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 started singing take me out to the ballgame?

Ex Output:

Who was the first person to sing take me out to the ballgame?