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 Input:
When did the first season of greys anatomy air?

Ex Output:
March 27, 2005


Ex Input:
Who invented the first curling iron in 1872?

Ex Output:
Francois Marcel Grateau


Ex Input:
When did the first apple iphone come out?

Ex Output:

June 29, 2007