13517
Among major educational institutions located in  Tehran  University of Tehran  Tehran University of Medical Sciences  Sharif University of Technology are the most prestigious universities of Iran .
 city of headquarters: Tehran, Tehran University of Medical Sciences
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Tehran, Tehran University of Medical Sciences 
Answer:
 city of headquarters: Tehran, Tehran University of Medical Sciences