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She narrated Ric Burns ' " Andy Warhol : A Documentary Film " , which was first televised in September 2006 as part of the PBS " American Masters " series .
 Ric Burns, PBS
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ric Burns, PBS