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Mihail Alexandrov , also known as " Mike " , " Euro " , and " The Script " , ( born April 9 , 1985 in Sofia , Bulgaria ) is an Olympic swimmer from Bulgaria .
 Mihail Alexandrov, Sofia , Bulgaria, Bulgaria
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Mihail Alexandrov, Sofia , Bulgaria, Bulgaria