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The Gemma Factor is a BBC Three sitcom starring Anna Gilthorpe , Claire King and Gwyneth Powell .
 Anna Gilthorpe, Claire King, Gwyneth Powell
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Anna Gilthorpe, Claire King, Gwyneth Powell