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Three years later he was able to move to the more prestigious Harrow School in 1949 , where he stayed for three years .
 organization: Harrow School
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: Harrow School 
Answer:
 organization: Harrow School