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: How many times has alec baldwin hosted saturday night live?
Example Output: 17

Example Input: What branch of biology creates models to make whole biological systems understandable?
Example Output: computational systems biology, systems biology and mathematical biology

Example Input: Where is the world cup 2018 ball made?
Example Output:
Pakistan and China