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Prior to receiving his PhD Gregorian had already begun teaching European and Middle Eastern history at San Francisco State College ( now  San Francisco State University  ) upon returning to  California  from Afghanistan in 1962 .
 San Francisco State University, California
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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:
 San Francisco State University, California