5500
Serbian Foreign Minister Vuk Jeremi? paid a visit to Azerbaijan in 2009 and President o  f Serbi   a Boris Tadi  ? paid an official visit to Azerbaijan in 2010 .
 f Serbi, a Boris Tadi
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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:
 f Serbi, a Boris Tadi