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: Are radio waves electromagnetic waves or sound waves?

A: electromagnetic waves
****
Q: The percentage of the inheritance of obesity that is accounted for by genetic factors is about?

A: 40–70%
****
Q: Who wrote i will always love you whitney houston?

A:
Dolly Rebecca Parton
****