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.
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Question: Who needed the brain in wizard of oz?

Answer: the Scarecrow


Question: Who is known as the father of indian nuclear programme?

Answer: Homi Jehangir Bhabha


Question: What does the letter a mean in the scarlet letter?

Answer:
adulteress