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` ` It looks as if part of the looting was a deliberate planned action , ' ' said McGuire Gibson , a University of Chicago professor and president of the American Association for Research in Baghdad .
 University of Chicago, the American Association for Research in Baghdad, McGuire Gibson, a University of Chicago professor, president of the American Association for Research in Baghdad
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 University of Chicago, the American Association for Research in Baghdad, McGuire Gibson, a University of Chicago professor, president of the American Association for Research in Baghdad