21965
Police in Yugoslavia dispersed about 1,000 ethnic Albanians who were protesting the trial of the former Communist Party chief of the southern province of Kosovo .
 Yugoslavia, about 1,000, Albanians, Communist Party, Kosovo
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: date, organization, person, geographical social political, national religious political, facility, cardinal, location, work of art, law, event, product, ordinal, percent, time, quantity, money, language 
Text: {0} 
Answer:
 Yugoslavia, about 1,000, Albanians, Communist Party, Kosovo