206672
Part One 1940-1951 , has six chapters whose authors are Arthur Koestler and Cynthia Koestler , alternately .
 person: Arthur Koestler; person: Koestler
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: Arthur Koestler, Koestler 
Answer:
 person: Arthur Koestler; person: Koestler