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Marvin Cobb ( born August 6 , 1953 in Detroit , Michigan ) is a former American football safety in the National Football League .
 person: Marvin Cobb; location: Detroit , Michigan; organization: National Football League
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: Marvin Cobb, Detroit , Michigan, National Football League 
Answer:
 person: Marvin Cobb; location: Detroit , Michigan; organization: National Football League