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.

Are radio waves electromagnetic waves or sound waves?
electromagnetic waves

Who won season 10 america's got talent?
Paul Zerdin

Who did eagles play in 2004 super bowl?

New England Patriots