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.

Where can we find the smallest bone in the human body?
middle ear

Is a tld that was originally intended for non profit entities?
.0rg

When did the red sox yankees rivalry began?

April 26, 1901