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The I.O.C. also released a message of support for London and said that Rogge , who made the announcement of London 's victory , had expressed his sympathy in writing to Prime Minister Tony Blair and London 's mayor , Ken Livingstone . ''
 Ken Livingstone, London; Ken Livingstone, London; Ken Livingstone, London
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:
 Ken Livingstone, London; Ken Livingstone, London; Ken Livingstone, London