21285
 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: nationality, country capital, place of death, children, location contains, place of birth, place lived, administrative division of country, country of administrative divisions, company, neighborhood of, company founders 
Text: {0} 
Answer:
 nationality: Nicolas Kiefer, Germany