2581
` ` Yugoslavia and Serbia have joined the family of democratic nations . ' '
 Yugoslavia, Serbia, the family of democratic nations, democratic nations
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 Yugoslavia, Serbia, the family of democratic nations, democratic nations