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 airline has its hub in charlotte nc?

SOLUTION: What major airline has its hub in charlotte nc?

PROBLEM: When did the state of the union address start?

SOLUTION: When did the annual state of the union address start?

PROBLEM: Who has calculated the most digits of pi?

SOLUTION:
Who has calculated the most digits of pi in 2016?