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Edgar Cowan ( September 19 , 1815 August 31 , 1885 ) was an American lawyer and Republican politician from Greensburg , Pennsylvania .
 Edgar Cowan, American, Republican, Greensburg , Pennsylvania
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Edgar Cowan, American, Republican, Greensburg , Pennsylvania