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: When did the civil war end in sierra leone?

Answer: 18 January 2002


Question: When did the astros move to the american league?

Answer: 2013


Question: What invention allowed a single weaver to weaver much wider fabrics?

Answer:
The flying shuttle