character: Stephen Hawking
topic: Applications of General Relativity
grade: 9
subject: Physics
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character: Albert Einstein
topic: Theory of General Relativity
grade: 9
subject: Physics
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character: Galileo Galilei
topic: Foundations of Physics
grade: 9
subject: Physics
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character: Isaac Newton
topic: Laws of Motion and Gravity
grade: 9
subject: Physics
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