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Dear Superstar again toured in support of Heartless in 2009 supporting Papa Roach on the sold-out tour , were quickly confirmed to appear at the Download Festival 2009 which was swiftly followed by a tour with Buckcherry culminating in an end-of-tour appearance at the Sonisphere festival .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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