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Dudley Brown , an NRA lobbyist throughout the early 1990 ’s founded the group shortly after leaving the NRA state affiliate for being too lax on gun-control .
 person: Dudley Brown
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: Dudley Brown 
Answer:
 person: Dudley Brown