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Many other sprinters who did well in the prologue , including Tom Boonen , the world road race champion from Belgium , hoped to gain the yellow jersey by winning the opening stage .
 nationality: Tom Boonen, Belgium
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Tom Boonen, Belgium 
Answer:
 nationality: Tom Boonen, Belgium