3811
She succeeded to the chair when the incumbent , George Ridley , died in January 1944 .
 person: George Ridley
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: George Ridley 
Answer:
 person: George Ridley