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In the 1990s Brieffies retired from the music industry and became a qualified manicurist / pedicurist , before reuniting with the Dolly Dots in 2007 for a comeback tour which included three concerts to sell-out audiences of 10,000 at the Ahoy Arena in Rotterdam .
 Brieffies, Rotterdam
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Brieffies, Rotterdam