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Rubin  the U.S.  Treasury  secretary under President Bill Clinton was named to the chairman's office at Citi a year after the financial services company was formed through the combination of Travelers Group and Citibank .
 employee of: Rubin, Treasury
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:  Rubin, Treasury 
Answer:
 employee of: Rubin, Treasury