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In 1991 , he released his album " O.G. Original Gangster " , which is regarded as one of the albums that defined gangsta rap .
 media: O.G. Original Gangster
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 media: O.G. Original Gangster