9598
During the 1970s Rorion Gracie of the famous Gracie family would eventually immigrate to the  United States  and introduce Vale Tudo to a new market when he helped found the  Ultimate Fighting Championship  ( UFC ) in 1993 .
 country of headquarters: United States, Ultimate Fighting Championship
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, Ultimate Fighting Championship