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.

[Q]: Who has won more soccer games mexico or usa?
[A]: Mexico


[Q]: When was the song you're so vain written?
[A]: 1971


[Q]: Which country will host the summer olympics in 2020?
[A]:
Japan