In this task, you are given a question in Persian, and your task is to translate it into English.

Q: تفاوت بین سود اقتصادی و سود طبیعی چیست؟

A: What is the difference between economic profit and normal profit?
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Q: تفاوت بین ژنراتور AC و DC چیست؟

A: What is the difference between an AC and DC generator?
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Q: چند رمان عاشقانه بسیار خوب و دارای حس هستند؟

A:
What are some very good and real touching romantic novels?
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