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Sir John Betjeman , ( 1906 – 1984 ) was a twentieth-century English poet , writer and broadcaster .
 person: John Betjeman
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: John Betjeman 
Answer:
 person: John Betjeman