81505
The town is named after the medieval ruler Balik , brother of Dobrotitsa , after whom is named the city of Dobrich .
 Balik, Dobrotitsa, Dobrich
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Balik, Dobrotitsa, Dobrich