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In  La Jornada  ( March 7 2008 page 26 ) Carlos Fernandez-Vega pointed out that in 1991 when the privatization of Telefonos de  Mexico  [ 3 ] took place Carlos Slim's fortune was estimated to be $ 1.6 billion dollars ; by 2008 it had grown to $ 60 billion dollars ( a percent increase ) .
 country of headquarters: La Jornada, Mexico
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: La Jornada, Mexico