Determine the topic of the passage. "Steam is a digital distribution , digital rights management , multiplayer and communications platform developed by Valve Corporation ." Topic:
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Answer: Steam (software)


Determine the topic of the passage. "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 ." Topic:
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Answer: United States ten-dollar bill


Determine the topic of the passage. "A thin film is a layer of material ranging from fractions of a nanometer ( monolayer ) to several micrometers in thickness." Topic:
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Answer:
Thin film