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Another model of scientific progress , as put forward by Richard Boyd , and others , is history of science as a model of scientific progress .
 person: Richard Boyd
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 Boyd 
Answer:
 person: Richard Boyd