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Interior  Secretary  Dirk Kempthorne  will expand ethics oversight after reports revealing parties sexual relationships and lavish gifts between U.S. government oil brokers and energy company employees .
 employee of: Interior, Dirk Kempthorne
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "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} 
Answer:
 employee of: Interior, Dirk Kempthorne