character: Stephen Hawking
topic: Black Holes and Theoretical Physics
grade: 6
subject: English
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character: Albert Einstein
topic: Theory of Relativity
grade: 6
subject: English
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character: Neil deGrasse Tyson
topic: Astrophysics
grade: 6
subject: English
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character: Carl Sagan
topic: Cosmos and the Universe
grade: 6
subject: English
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