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 upper most layer of soil?

SOLUTION: What is the upper most layer of soil called?

PROBLEM: When did the voting age change from 21 to 18?

SOLUTION: When did the debate begin to lower the voting age from 21 to 18?

PROBLEM: Who is the chief judge of gujarat high court?

SOLUTION:
Who is the 24th chief judge of gujarat high court, starting in 2016?