I need a detailed explanation of how to use a semicolon in a sentence, including examples. Your response should contain at least 2 placeholders represented by square brackets, such as [example1]. Make sure to include at least 3 examples of sentences using semicolons. Your response must have 3 paragraphs. Paragraphs are separated with the markdown divider: ***. At the end of your response, please explicitly add a postscript starting with P.S.

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