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Songwriting and vocal production Riddick is perhaps best known for her work with multi-platinum selling pop artist Rihanna for whom she has vocally produced and collaborated on three albums with including A Girl like Me , Music of the Sun and Good Girl Gone Bad .
 person: Riddick; person: Rihanna
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: Riddick, Rihanna 
Answer:
 person: Riddick; person: Rihanna