25990
From 1956 until the collapse of the school in 1963 , Kortokraks was Kokoschka 's chief assistant at the School of Vision .
 person: Kortokraks; person: Kokoschka 's
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: Kortokraks, Kokoschka 's 
Answer:
 person: Kortokraks; person: Kokoschka 's