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: When did the us detonate the first hydrogen bomb?
Example Output: November 1, 1952

Example Input: Who's the best selling artist of all time?
Example Output: The Beatles

Example Input: Who wrote a description of the early church’s celebration of the sunday eucharist around ad 150?
Example Output:
Saint Justin Martyr