872
As an Assistant United States Attorney Grauer was given special achievement awards by the Attorney General of the  United States  the  United States Postal Inspection Service  the Federal Bureau of Investigation and the United States Secret Service .
 country of headquarters: United States, United States Postal Inspection Service
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:
 country of headquarters: United States, United States Postal Inspection Service