In this task, You are given an open-domain question that can be answered based on factual information. Your task is to provide \*short\* answer (in a few words only) for the given question. The short answer can be one or more entities or it can also be boolean \*yes\* or \*no\*.

Q: when did charleston become the capital of west virginia

A: 1877
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Q: what is the interior angle of a 20 sided polygon

A: 162°
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Q: number of episodes in the flash season 4

A:
23
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