13255
Thus in a major step for  Codelco  in 1992 it invited domestic and foreign mining firms to participate in four joint explorations in northern  Chile  .
 country of headquarters: Codelco, Chile
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: Codelco, Chile