3216
In Albania , Bulgaria , the former Yugoslavia , and Romania , potatoes are used instead of eggplant , pork or beef mince , and the top layer is usually milk or yogurt mixed with raw eggs , sometimes with a small amount of flour added .
 Albania, Bulgaria, Yugoslavia, Romania
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Albania, Bulgaria, Yugoslavia, Romania