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: When did star spangled banner became the national anthem?

SOLUTION: March 3, 1931

PROBLEM: When did arches national park become a national park?

SOLUTION: November 12, 1971

PROBLEM: Where does bile go after it leaves the gallbladder?

SOLUTION:
small intestine