character: Mr. David Lee
topic: The Importance of Catalysts in Industry
grade: 9
subject: Science
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character: Ms. Sarah Thompson
topic: Chemical Reactions and Catalysis
grade: 9
subject: Science
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character: Mr. John Smith
topic: Industrial Applications of Catalysts
grade: 9
subject: Science
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character: Dr. Emily Johnson
topic: The Role of Catalysts in Sustainable Energy
grade: 9
subject: Science
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