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After leaving NASA Dr. Sullivan served as President and CEO of the  COSI Columbus  an interactive science center in  Columbus  Ohioand as Director for Ohio State University's Battelle Center for Mathematics and Science Education Policy as well as a volunteer science advisor to COSI .
 city of headquarters: COSI Columbus, Columbus
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:  COSI Columbus, Columbus 
Answer:
 city of headquarters: COSI Columbus, Columbus