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.

[EX Q]: Who has sold the most records in the uk?
[EX A]: The Beatles

[EX Q]: The most important mineral product of northern chile is?
[EX A]: copper

[EX Q]: Who plays in the fa cup final 2018?
[EX A]:
Chelsea and Manchester United