character: Thomas Edison
topic: Direct Current (DC)
grade: 6
subject: Science
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character: Nikola Tesla
topic: Alternating Current (AC)
grade: 6
subject: Science
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character: George Westinghouse
topic: Alternating Current (AC)
grade: 6
subject: Science
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character: Franklin Pope
topic: Direct Current (DC)
grade: 6
subject: Science
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