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After serving his time in prison Susumu Ishii spoke to the media , saying ; “ We can not succeed in the Yakuza world unless we are active and aggressive until our early forties .
 Susumu Ishii
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Susumu Ishii