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It was written by the British historian Sir Alan Bullock ( 1914-2004 ) and first published in 1952 .
 person: Alan Bullock
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: Alan Bullock 
Answer:
 person: Alan Bullock