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Blix  who is in Athens together with Mohamed ElBaradei head of the  International Atomic Energy Agency  ( IAEA ) told reporters that while Monday's agreement solved a number of practical issues . . a lot is still to be done .
 Blix, International Atomic Energy Agency
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:
 Blix, International Atomic Energy Agency