314899
He has three brothers one of whom is Andrew Stock former president of the Society of Wildlife Artists .
 person: Andrew Stock; organization: Society of Wildlife Artists
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: Andrew Stock, Society of Wildlife Artists 
Answer:
 person: Andrew Stock; organization: Society of Wildlife Artists