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Hu obtained Ph.D. from the University College London ( UCL ) in 1948 , and his advisor was Harrie Massey .
 person: Hu; organization: University College London; person: Harrie Massey
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: Hu, University College London, Harrie Massey 
Answer:
 person: Hu; organization: University College London; person: Harrie Massey