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At Harvard , Christakis is also known for his popular undergraduate lecture class " Life and Death in the USA " which is podcast publicly , and for attracting a diverse group of faculty and students from across the University 's departments and professional schools into his research group .
 organization: Harvard; person: Christakis
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: Harvard; person: Christakis