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Although film festivals in Stratford-upon-Avon have taken place consistently every two years no announcement has been made for a 2011 festival .
 Stratford-upon-Avon
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Stratford-upon-Avon