Determine the topic of the passage. "Cartridge-operated extinguishers contain the expellant gas in a separate cartridge that is punctured prior to discharge, exposing the propellant to the extinguishing agent." Topic:
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Answer: Fire extinguisher


Determine the topic of the passage. "Currently the dominant technology for direct production is steam reforming from hydrocarbons ." Topic:
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Answer: Hydrogen production


Determine the topic of the passage. "It is available as a commercial product in many countries, with similar variations in ingredients, cooking method, and other variables." Topic:
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Answer:
Potato bread