1389
He taught at Vanderbilt University's school of medicine at what was then the Bowman Gray School of Medicine at Wake Forest University in North Carolina and at what is today the  University of Texas Southwestern Medical School  in  Dallas  Texas .
 city of headquarters: University of Texas Southwestern Medical School, Dallas
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: University of Texas Southwestern Medical School, Dallas