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 player has the most super bowl appearances?

Ex Output:
Tom Brady


Ex Input:
Who did the united states acquire texas from?

Ex Output:
Mexico


Ex Input:
Where were the first railroads built in minnesota?

Ex Output:

between St. Paul and St. Anthony