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The series detailed events beginning in the late 1960s to and throughout the 1970s and told the origin of the Mr Asia drug syndicate and its original leader Marty Johnstone .
 person: Marty Johnstone
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Marty Johnstone