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In 2005 , he was signed to the record label Derrty Entertainment , owned by rapper Nelly .
 organization: Derrty Entertainment; person: Nelly
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: Derrty Entertainment, Nelly 
Answer:
 organization: Derrty Entertainment; person: Nelly