What is the question to: "Steam is a digital distribution , digital rights management , multiplayer and communications platform developed by Valve Corporation ."? The topic is Steam (software).
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Answer: "what is steam by valve corporation?"


What is the question to: "The first U.S. Secretary of the Treasury (1789–95), Alexander Hamilton , is currently featured on the obverse of the bill, while the U.S. Treasury Building is featured on the reverse ."? The topic is United States ten-dollar bill.
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Answer: "who is on the $10. bill?"


What is the question to: "A thin film is a layer of material ranging from fractions of a nanometer ( monolayer ) to several micrometers in thickness."? The topic is Thin film.
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Answer:
"what is "thin film" technology?"