Problem: In the Bible who was the son of Abraham and Sarah?
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A: isaac

Problem: How many different countries does the 4,370 km (2,715 mi) Congo River run through or border?
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A: 10

Problem: The Saporta Cup was played for in which sport?
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A: basketball

Problem: Which branch of mathematics takes its name from the Latin for 'pebble'?
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A:
calculus