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It is very important that this year  Bulgaria  prove itself capable to meet the challenges of European integration . . especially in critical areas Prime Minister  Sergey Stanishev  told parliament as he announced the nomination .
 countries of residence: Bulgaria, Sergey Stanishev
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 countries of residence: Bulgaria, Sergey Stanishev