TASK DEFINITION: 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.
PROBLEM: Who does stefan end up with vampire diaries?

SOLUTION: Caroline Forbes

PROBLEM: Voice of optimus prime dark of the moon?

SOLUTION: Peter Claver Cullen

PROBLEM: Who shot the first shot at fort sumter?

SOLUTION:
South Carolina militia