18058
BEST OF THE REST -- Novak Djokovic wins Wimbledon at 19 for Serbia and immediately declares that he is switching allegiance to Britain , whose tennis officials have discussed a nationality change with him and his family .
 nationality: Novak Djokovic, Serbia
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: ethnicity, place lived, geographic distribution, company industry, country of administrative divisions, administrative division of country, location contains, person of company, profession, ethnicity of people, company shareholder among major shareholders, sports team of location, religion, neighborhood of, company major shareholders, place of death, nationality, children, company founders, company founded place, country of capital, company advisors, sports team location of teams, place of birth 
Text: {0} 
Answer:
 nationality: Novak Djokovic, Serbia