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Sara Sefchovich ( born Sara Sefchovich Wasongarz on April 2 1949 in  Mexico City  ) is a Mexican writer She studied sociology at the  National Autonomous University of Mexico  ( UNAM ) earning a master's degree in 1987 and a doctorate degree in 2005 in History of Mexico .
 city of headquarters: Mexico City, National Autonomous University of 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:
 city of headquarters: Mexico City, National Autonomous University of Mexico