Please answer this: Determine the topic of the question-answer pair. Question: "where did the persian war take place?";  Answer: "The actions of the general Pausanias at the siege of Byzantium alienated many of the Greek states from the Spartans, and the anti-Persian alliance was therefore reconstituted around Athenian leadership, as the so-called Delian League ."? Topic:
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Answer: Greco-Persian Wars


Please answer this: Determine the topic of the question-answer pair. Question: "what are some chinese inventions?";  Answer: "China has been the source of many inventions , including the Four Great Inventions : papermaking , the compass , gunpowder , and printing (both woodblock and movable type )."? Topic:
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Answer: List of Chinese inventions


Please answer this: Determine the topic of the question-answer pair. Question: "how was color introduced in film??";  Answer: "The first color cinematography was by means of additive color systems such as the one patented in England by Edward Raymond Turner in 1899 and tested in 1902."? Topic:
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Answer:
Color motion picture film