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Christ opher Robert Hill born 1952 is an American diplomat who served as the U.S. Ambassador to Iraq from 2009 to 2010. He succeeded Ryan Crocker and preceded James Jeffrey. On July 1, 2010, Hill was chosen to be the dean of the Josef Korbel School of International Studies at the University of Denver. He also serves on the board of International Relief and Development Inc. and is an advisor with Albright Stonebridge Group, a strategic advisory firm.
 Robert Hill, Christ
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: place of death, place of birth, education degree, education institution 
Text: {0} 
Answer:
 Robert Hill, Christ