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Silver Blaze is a 1937 British , black-and-white crime and mystery film , based loosely on Arthur Conan Doyle 's short story Silver Blaze .
 person: Arthur Conan Doyle
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: Arthur Conan Doyle 
Answer:
 person: Arthur Conan Doyle