390749
John Pickering had over the past ten years changed his profession from teacher to proprietor and head of an iron foundry employing 52 men and four boys .
 person: Pickering
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: Pickering 
Answer:
 person: Pickering