Problem: Given the question: Determine the topic of the question-answer pair. Question: "how does a dredge work??"; Answer: "If the crane is mounted on a barge, the entire vessel is referred to as a dredger."? Topic:
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The answer is:
Dredging

Problem: Given the question: Determine the topic of the question-answer pair. Question: "when was the internet started?"; Answer: "The history of the Internet began with the development of electronic computers in the 1950s."? Topic:
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The answer is:
History of the Internet

Problem: Given the question: Determine the topic of the question-answer pair. Question: "what is a gasser car?"; Answer: "A gasser was a type of hot rod originating on the dragstrips of the United States in the late 1950s and continued until the early 1970s."? Topic:
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The answer is:
Gasser (car)