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.

Input: Consider Input: Are radio waves electromagnetic waves or sound waves?

Output: electromagnetic waves


Input: Consider Input: Who is the boy in rihanna's we found love video?

Output: Dudley O'Shaughnessy


Input: Consider Input: Who played the title role in the popular film piku?


Output: Deepika Padukone