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He has been the State Department 's refugee coordinator and is a former Harvard politics professor. _Ronald for the rank of ambassador during his tenure as U.S. negotiator on textile matters.
 State Department, U.S.; Harvard, U.S.
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: Organization based in, Located in, Live in, Work for, Kill 
Text: {0} 
Answer:
 State Department, U.S.; Harvard, U.S.