Not necessarily, don't you have to make the sentence into question form? Could you really just make any sentence a question, considering some would become grammatically incorrect if we did so?
English
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Why did you answer the question?
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Has it not been customary throughout the thread?
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Didn't you make the rules?
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Didn't the rules in effect make answering a question with a question customary?
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Hi, how are you?
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Did that have anything to do with my previous question? [spoiler]I'm doing well, how about you?[/spoiler]
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Why am I so good at changing topics?
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Why would you want to, doesn't it destroy the purpose of a nice conversation?