character: Mr. John Smith
topic: Applications of Blockchain in Finance
grade: 10
subject: Computer Science
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character: Dr. Emma Johnson
topic: Introduction to Cryptocurrencies
grade: 10
subject: Computer Science
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character: Ms. Lisa Wong
topic: Smart Contracts Explained
grade: 10
subject: Computer Science
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character: Mr. Alan Turner
topic: Blockchain Security in Financial Systems
grade: 10
subject: Computer Science
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