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John Singleton , ( died c. 1789 ) , sometimes known as John Singleton the Younger to distinguish him from his uncle , was a British Thoroughbred horse racing jockey of the 18th century .
 location: British
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: British 
Answer:
 location: British