8536
Arnold Leibovit served as executive producer and Simon Wells , the great-grandson of the original author , served as director .
 person: Arnold Leibovit; person: Simon Wells
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: Arnold Leibovit, Simon Wells 
Answer:
 person: Arnold Leibovit; person: Simon Wells