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Donald Knuth ( PhD 1963 ) , the " father " of the analysis of algorithms , wrote " The Art of Computer Programming " and created the TeX computer typesetting system , which is commonly used in the scientific community .
 person: Donald Knuth
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: Donald Knuth 
Answer:
 person: Donald Knuth