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 type of radiation is used in x rays?

SOLUTION: What general type of radiation is used in x rays?

PROBLEM: Who wrote the screenplay for harry potter movies?

SOLUTION: Who wrote the screenplay for Harry Potter movies 1-4 and 6-8?

PROBLEM: When does the new doctor who series start 2018?

SOLUTION:
When does the new doctor who series start airing in 2018?