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: Where does lymph fluid drain in order to go back into the cardiovascular system?

SOLUTION: Which veins does lymph fluid drain in order to go back into the cardiovascular system?

PROBLEM: When did great britain change its name to united kingdom?

SOLUTION: When did great britain change its name to United Kingdom of Great Britain & Ireland?

PROBLEM: Number of languages spoken in the united states?

SOLUTION:
Number of languages spoken or signed in the united states in total?