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.

Input: Consider Input: Who was the first president who lived in the white house?

Output: John Adams


Input: Consider Input: Who owns the treasure island in las vegas?

Output: Phil Ruffin


Input: Consider Input: What country does messi play for in fifa 15?


Output: FC Barcelona