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James T. Mangan ( 1896 – 1970 ) was a famous eccentric , public relations man and best-selling author on self-help topics who publicly claimed ownership of outer space in 1948 .
 person: T. Mangan
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: T. Mangan 
Answer:
 person: T. Mangan