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.

Example Input: In 550 bc which leader began the persian empire?
Example Output: Cyrus II of Persia

Example Input: Where does the mysterious benedict society take place?
Example Output: the Learning Institute for the Very Enlightened

Example Input: When did league of nations become united nations?
Example Output:
20 April 1946