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From December 2009 a parallel ' Nox Illuminata ' festival was held at the Festspielhaus St. Pölten in the town of Sankt Pölten , in Austria .
 Pölten, Sankt Pölten, Austria
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pölten, Sankt Pölten, Austria