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:
How many miles is the mexican border to the united states?

Ex Output:
1,954 mi


Ex Input:
Who sang for debra kerr in an affair to remember?

Ex Output:
Margaret Nixon McEathron


Ex Input:
What form of government does el salvador have?

Ex Output:

presidential representative democratic republic