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Silvers received his PhD under the supervision of Leo Sario from the University of California , Los Angeles in 1964 .
 organization: University of California , Los Angeles
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: University of California , Los Angeles 
Answer:
 organization: University of California , Los Angeles