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After studies at that conservatory 's Pre-College Division with an assistant to the legendary instructor Ivan Galamian , he switched at the college level to Miss DeLay , Mr. Galamian 's longtime assistant and , ultimately , his rival .
 organization: Pre-College Division; person: Ivan Galamian; person: DeLay; person: Galamian
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: date, organization, person, geographical social political, national religious political, facility, cardinal, location, work of art, law, event, product, ordinal, percent, time, quantity, money, language 
Text: {0} 
 Entities: Pre-College Division, Ivan Galamian, DeLay, Galamian 
Answer:
 organization: Pre-College Division; person: Ivan Galamian; person: DeLay; person: Galamian