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In a day of polite but tense encounters , President Hu Jintao of China told President Bush on Sunday that he was willing to move more quickly to ease economic differences with the United States , but he gave no ground on increasing political freedoms .
 Hu Jintao, China
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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:
 Hu Jintao, China