character: Mr. Lee
topic: The Role of Sanitation in Disease Prevention
grade: 9
subject: Science
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character: Dr. Smith
topic: Hygiene Practices in Reducing Infectious Diseases
grade: 9
subject: Science
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character: Ms. Johnson
topic: Emergency Sanitation Measures for Public Health
grade: 9
subject: Science
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character: Professor Green
topic: Impact of Clean Water Access on Health Outcomes
grade: 9
subject: Science
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