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Chinese Leader to Visit North Korea BEIJING , Oct. 21 -LRB- AP -RRB- -- President Hu Jintao of China is to visit North Korea next week in response to American appeals for Beijing to do more to convince North Korea stop developing nuclear weapons , China said Friday .
 China, Beijing; China, Beijing; China, Beijing; China, Beijing; China, Beijing; China, Beijing; Hu Jintao, China; Beijing, China; Beijing, China; 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:
 China, Beijing; China, Beijing; China, Beijing; China, Beijing; China, Beijing; China, Beijing; Hu Jintao, China; Beijing, China; Beijing, China; Hu Jintao, China