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Blair is widely expected to be succeeded by his long-serving finance minister Chancellor of the  Exchequer   Gordon Brown  when he quits after 10 years in power .
 Exchequer, Gordon Brown
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 Exchequer, Gordon Brown