195990
Walter A. McDougall ( born 1946 ) is an American historian and a Pulitzer Prize winner .
 person: Walter; person: McDougall
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: Walter, McDougall 
Answer:
 person: Walter; person: McDougall