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Mutualism can in many ways be considered the original anarchy since Pierre-Joseph Proudhon was the first to identify himself as an anarchist .
 person: Pierre-Joseph Proudhon
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Pierre-Joseph Proudhon