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: Who won season 10 america's got talent?
Example Output: Paul Zerdin

Example Input: Who wrote the book journey to the center of the earth?
Example Output: Jules Verne

Example Input: Name the metals which are soluble only in aqua regia?
Example Output:
gold, platinum