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Some films had been shot partially in color , using color only for certain scenes , a practise that would continue until Nikkatsu took over the genre with its Roman porno series in 1971 .
 person: Nikkatsu
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: Nikkatsu 
Answer:
 person: Nikkatsu