29603
The defending singles champions are Roger Federer of Switzerland and Svetlana Kuznetsova of Russia , who won their first United States Open titles by defeating Lleyton Hewitt of Australia and Elena Dementieva of Russia .
 nationality: Roger Federer, Switzerland; nationality: Lleyton Hewitt, Australia
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: Roger Federer, Switzerland; nationality: Lleyton Hewitt, Australia