Please answer this: Determine the topic of the question. Question: "where did the persian war take place?" Topic:
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Answer: Greco-Persian Wars


Please answer this: Determine the topic of the question. Question: "what are some chinese inventions?" Topic:
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Answer: List of Chinese inventions


Please answer this: Determine the topic of the question. Question: "how was color introduced in film??" Topic:
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Answer:
Color motion picture film