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Joseph 's grandfather Lewis had the distinction of being a private in the 38th Regiment USCT , one of four USCT units that were the first US troops to march into Richmond , Virginia when it fell in April , 1865 .
 person: Joseph
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: Joseph 
Answer:
 person: Joseph