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Gregory has been performing as a DJ in all major events in San Francisco , and also abroad in Detroit , Miami , Los Angeles , Dubai , Bratislava , Copenhagen , etc. .
 Gregory, Detroit, Miami, Los Angeles, Dubai, Bratislava, Copenhagen
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Gregory, Detroit, Miami, Los Angeles, Dubai, Bratislava, Copenhagen