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Duan responded , " Looking through the book and memorizing sentences is not a great achievement , " and he refused to sit for the examination .
 person: Duan
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Duan 
Answer:
 person: Duan