13972
It is in the southeastern part of the Balkans between the plains of Thrace to the west , the lowlands near Burgas to the north , and the Black Sea to the east .
 location: Balkans; location: Thrace; location: Burgas; location: Black Sea
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: Balkans, Thrace, Burgas, Black Sea 
Answer:
 location: Balkans; location: Thrace; location: Burgas; location: Black Sea