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 Q]: When was mary shelley's frankenstein first published?
[EX A]: 1 January 1818

[EX Q]: Who did oprah winfrey play in the color purple?
[EX A]: Sofia

[EX Q]: Who wrote the first book about king arthur?
[EX A]:
Sir Thomas Malory