character: Mr. John Smith
topic: Structure of the Lungs
grade: 10
subject: Biology
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character: Ms. Emily Johnson
topic: Respiratory System Anatomy
grade: 10
subject: Biology
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character: Dr. Sarah Thompson
topic: Gas Exchange in the Lungs
grade: 10
subject: Biology
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character: Mr. Alex Brown
topic: Functions of the Respiratory System
grade: 10
subject: Biology
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