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In 1881 he set out the axiomatization of natural number arithmetic , a few years before Richard Dedekind and Giuseppe Peano .
 person: Richard Dedekind; person: Giuseppe Peano
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: Richard Dedekind, Giuseppe Peano 
Answer:
 person: Richard Dedekind; person: Giuseppe Peano