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Soon after , they returned to the United States where Harry accepted a position as a Professor of Economics at the University of Delaware .
 person: Harry; organization: University of Delaware
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Harry, University of Delaware 
Answer:
 person: Harry; organization: University of Delaware