27011
 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
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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:
 Ken Livingstone, London