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:
What is on top of the space needle?

Ex Output:
observation deck


Ex Input:
What is the name of the tennessee titans football stadium?

Ex Output:
Nissan Stadium


Ex Input:
Which three nations participated in the d-day operations in normandy?

Ex Output:

United States, Great Britain, and Canada