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Who Was Pocahontas?
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Where Can Moss Grow?
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What Causes a Shooting Star?
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Why Do Birds Fly in a V?
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How Old Are Fairy Tales?
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Where in the World Is Kolkata?
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Why Are They Called "Ears" of Corn?
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Why Is April 11, 1954, the Most Boring Day in History?
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What Is a Spit Valve?
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Why Do Some Years Leap Ahead?
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What Is a Prime Number?
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Who Invented Rock and Roll?
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Who Is the Unknown Soldier?
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What Is Veterans Day?
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Who Is Uncle Sam?
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Where in the World Is Turkey?
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Are All Letters Created Equal?
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Who Is Serena Williams?
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Who was Stephen Hawking?
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Why Do You Have To Go To Bed Before Dark?