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: Rotating part of dc motor is known as?

Answer: armature


Question: In what movie did the song white christmas make its debut?

Answer: Holiday Inn


Question: When was sugauli treaty signed between britain india and nepal?

Answer:
2 December 1815