Problem: Which river flows over the Victoria Falls?
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A: zambezi

Problem: Which American Nobel Laureate wrote 'The Sound And The Fury' and 'As I Lay Dying'?
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A: william faulkner

Problem: Where in the human body are the 'Billroth Cords'?
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A: spleen

Problem: Which hero of several Arthur Conan Doyle stories was first introduced in the novel 'The Lost World' in 1912?
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A:
professor challenger