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The James Montgomery Flagg House is an historic house in Biddeford , York County , Maine .
 Montgomery Flagg, Biddeford, York County , Maine
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Montgomery Flagg, Biddeford, York County , Maine