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He ran for , was elected to and served in the Pennsylvania State House of Representatives between 1872 and 1876 until his election to the United States House of Representatives , where he served from 1877 to 1881 .
 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:
 Pennsylvania