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: What is the largest populated city in the us?

SOLUTION: What is the largest populated city in the US based on a 2018 estimate?

PROBLEM: Who sings gran torino at the end of the movie?

SOLUTION: What performer sings Gran Torino at the end of the movie?

PROBLEM: Dark side of the moon weeks on chart?

SOLUTION:
Dark side of the moon total number of weeks on billboard album chart?