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During his longstanding commitment to the  International Atomic Energy Agency  and the United Nations  Hans Blix  has worked to fight the spread of weapons of mass destruction and for common security based on international law the university said in a statement .
 employee of: International Atomic Energy Agency, Hans Blix
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: 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} 
 Entity Pairs:  International Atomic Energy Agency, Hans Blix 
Answer:
 employee of: International Atomic Energy Agency, Hans Blix