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George Robertson Sinclair ( 28 October 1863 – 7 February 1917 ) was an English cathedral organist , who served at Truro and Hereford cathedrals .
 person: Robertson Sinclair
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: Robertson Sinclair 
Answer:
 person: Robertson Sinclair