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Playing career Beroe During 1999/2001 , Rumen Galabov played for Bulgarian A Professional Football Group side PFC Beroe Stara Zagora .
 Beroe, Rumen Galabov, Bulgarian A Professional Football Group, PFC Beroe Stara Zagora
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Beroe, Rumen Galabov, Bulgarian A Professional Football Group, PFC Beroe Stara Zagora