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He also wrote The Ares Decision ( 2011 ) , the eighth installment of the Covert-One series , originally created by Robert Ludlum .
 person: Robert Ludlum
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: Robert Ludlum 
Answer:
 person: Robert Ludlum