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According to Phayer , Breitinger is the " key to unraveling " the contradictory accounts of Catholicism in Poland between Poles of German ethnicity ( Nazi term Volksdeutsche ) and those of Polish ethnicity .
 Breitinger, Nazi
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Breitinger, Nazi