7309
Van Dusen retired at the beginning of March that year but remained active in racing with a small string of his own horses .
 person: Van Dusen
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: Van Dusen 
Answer:
 person: Van Dusen