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The Battle of Blazer 's Mill ( on April 4 , 1878 ) was a shootout between what were known as the Lincoln County Regulators and buffalo hunter Buckshot Roberts .
 location: Lincoln; person: Buckshot Roberts
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: Lincoln, Buckshot Roberts 
Answer:
 location: Lincoln; person: Buckshot Roberts