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Melvil Dewey edited the first three editions of the classification system and oversaw the revisions of all editions until his death in 1931 .
 person: Melvil Dewey
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: Melvil Dewey 
Answer:
 person: Melvil Dewey