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Who Invented the Unicycle?
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What Is a Smokejumper?
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What Is Pole Position?
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Are Debit Cards and Credit Cards the Same?
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What Is a Transformer?
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Who Jumps the Highest?
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What Is It Like To Live on the International Space Station?
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Can You Play Tennis on a Table?
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Why Are There Dimples On a Golf Ball?
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What Is a Phoenix?
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What Was the Joseon Dynasty in Korea?
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Who Is the World’s Strongest Person?
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Where Is Scandinavia?
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Who Was Theodor Geisel?
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Who Hit the Longest Home Run?
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What Type of Shark Is the Slowest?
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Are Eels Really Electric?
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Where Is America's Biggest Icebox?
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Where Is the Biggest Aquarium?
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How Long Does It Take Plastic To Decompose?