11536
There he won the silver medal in the flyweight division ( & ndash ; 51 " kg ) , after being defeated in the final by Bulgaria 's Petar Lesov .
 Bulgaria, Petar Lesov
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bulgaria, Petar Lesov