TASK DEFINITION: In this task, you're given an open-domain question. Your task is to provide an answer to the given question. There is only one unique answer for each question. Your answer should be short, and refer to an entity, date, number, etc. Do not put your answer in the context of a sentence.
PROBLEM: Who won the civil wars of the warring states period in order to become the first emperor of china?

SOLUTION: The first Sovereign Emperor of Qin"

PROBLEM: The meadowlands was once which kind of municipal facility?

SOLUTION: A city landfill

PROBLEM: What is the function of world trade organization?

SOLUTION:
regulation of international trade between nations