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In the men 's semifinal in the top half of the draw , top-seeded Roger Federer will face Nicolas Kiefer of Germany after Federer got through with a gritty but not terribly pretty 6-4 , 3-6 , 7-6 (7) , 7-6 (5) victory over the fifth-seeded Nikolay Davydenko on Wednesday night .
 nationality: Nicolas Kiefer, Germany
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: Nicolas Kiefer, Germany