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Keston and Westdal , best known for their 2004 performance at the Montréal Jazz Festival , are an electronic music production team consisting of UK native John Keston and Bay Area transplant Nils Westdal .
 UK, Bay Area
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 UK, Bay Area