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Ellington has been on stage with Mos Def , De La Soul , Meshell Ndegocello and with his mentor UK Soul legend Omar .
 person: Mos Def; person: Omar
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: Mos Def, Omar 
Answer:
 person: Mos Def; person: Omar