876
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 .
 Balkans, Thrace, Burgas, Black Sea
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Balkans, Thrace, Burgas, Black Sea