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]: Where does the last name salinas originate from?
[EX A]: Spain

[EX Q]: When did the us detonate the first hydrogen bomb?
[EX A]: November 1, 1952

[EX Q]: Who discovered that light is an electromagnetic wave?
[EX A]:
Heinrich Rudolf Hertz