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He formed the Drifting Cowboys backup band , which was managed by his mother , and dropped out of school to devote his time to his career .
 organization: Drifting Cowboys
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:
 organization: Drifting Cowboys