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The United States Constitution , ratified June 21 , 1788 , was influenced by the writings of Polybius , Locke , Montesquieu , and others .
 Polybius, Locke, Montesquieu
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Polybius, Locke, Montesquieu