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Utilizing the deans of architecture at the UCAR constituent universities as an expert committee , they eventually selected I. M. Pei as the project 's architect .
 person: I. M. Pei
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: I. M. Pei 
Answer:
 person: I. M. Pei