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Used by the Greek rhetoricians as a tool for the formation of argument by using common opinions , the doxa was often manipulated by sophist s to persuade the people , leading to Plato 's condemnation of Athenian democracy .
 Plato
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Plato