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Thomas Desmond Williams ( 26 May 1921 – 18 January 1987 ) was an Irish academic and Professor of Modern History at University College Dublin ( UCD ) .
 person: Desmond Williams; organization: University College Dublin
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: Desmond Williams, University College Dublin 
Answer:
 person: Desmond Williams; organization: University College Dublin