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David D. Friedman has expressed preference for a society where " almost everyone is self-employed " and " instead of corporations there are large groups of entrepreneurs related by trade , not authority .
 person: David D. Friedman
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: David D. Friedman 
Answer:
 person: David D. Friedman