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: Who sings backup on thank you led zeppelin?

SOLUTION: Who sings backup on Thank You by Led Zeppelin and plays drums for the band?

PROBLEM: Who is the cast of the new show the resident?

SOLUTION: Who is cast as Conrad Hawkins in the show The Resident?

PROBLEM: When was the last time the cavs won?

SOLUTION:
When was the last time the cavs won a Championship as of 2017?