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The Roy G. Cullen Building ( dedicated as Roy Gustav Cullen Memorial Building ) is the oldest building on the present-day campus of the University of Houston .
 person: Roy; person: Cullen; person: Roy; person: Cullen; organization: University of Houston
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: Roy, Cullen, Roy, Cullen, University of Houston 
Answer:
 person: Roy; person: Cullen; person: Roy; person: Cullen; organization: University of Houston