9019
He joined the administration of President Ronald Reagan in 1981 as undersecretary of the  Treasury  for monetary affairs where he was Treasury Secretary  Donald Regan  's principal negotiator on issues of Third World debt and the financing of the International Monetary Fund and other international lending agencies .
 employee of: Treasury, Donald Regan
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: Treasury, Donald Regan