187929
From 2006 to 2010 he studied at the National School of Music Liubomir Pipkov ( Sofia , Bulgaria ) in the violin class of Prof. Blagorodna Taneva .
 location: Sofia
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Sofia 
Answer:
 location: Sofia