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Balkans advisor James O'Brien and President Kostunica met for the first top - level talks between the United States and Yugoslavia , since the break of diplomatic relations on the eve of Nato air strikes in 1999 .
 location: Balkans; person: James O'Brien; person: Kostunica; ordinal: first; geographical social political: the United States; geographical social political: Yugoslavia; organization: Nato; date: 1999
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: 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:
 location: Balkans; person: James O'Brien; person: Kostunica; ordinal: first; geographical social political: the United States; geographical social political: Yugoslavia; organization: Nato; date: 1999