15408
He also held the rank of ambassador as the principal adviser on Soviet matters to Secretary of State Cyrus R. Vance in the Carter administration and was a speechwriter for Secretary of  State   Dean Acheson  in the Truman administration .
 employee of: State, Dean Acheson
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: State, Dean Acheson