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In Thailand there are currently 8 Centers of Excellence under Thailand National Nanotechnology Center : NANOTEC : CoE Kasetsert University Bangkok ; CoE Chulalongkorn University Bangkok ; CoE King Mongkut Institute of Technology Ladkrabang Bangkok ; CoE Mahidol University Bangkok ; CoE Asian Institute of Technology Pathum Thani ; CoE Prince of Songkhla University Phuket ; CoE Khon Kaen University Khon Kaen ; and CoE  Chiang Mai University   Chiang Mai  .
 city of headquarters: Chiang Mai University, Chiang Mai
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: Chiang Mai University, Chiang Mai