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 episodes in this game of thrones season 7?
Example Output: seven episodes

Example Input: What kind of rose is used to make rose water?
Example Output: Rosa × damascena

Example Input: Who has the most atp masters 1000 titles?
Example Output:
Rafael Nadal