7721
In 1980 aged 21 he moved to the  United States  to attend the  College of Southern Idaho  and he enjoyed most of his success in America .
 country of headquarters: United States, College of Southern Idaho
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, College of Southern Idaho