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What Are Sakura?
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Who Was Sitting Bull?
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What Is AIDS?
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Who Was Arthur Ashe?
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Why Is the Liberty Bell Cracked?
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What Does It Mean To Hang Ten, Dude?
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What is Smallpox?
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What Is Buckminsterfullerene?
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What is CRISPR?
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How Does Contact Tracing Work?
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What Are Lymph Nodes?
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What Does It Mean To Stand For Something?
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What Is the Space Needle?
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How Old Is Barbie?
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What Is a Mouse?
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Who Is Misty Copeland?
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How Is Plastic Recycled?
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Who Was Eddie Van Halen?
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Who Was Mother Teresa?
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Who Was Ruth Bader Ginsburg?