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Len Goodman , Bruno Tonioli , Craig Revel Horwood and Arlene Phillips returned as judges .
 person: Len Goodman; person: Bruno Tonioli; person: Craig Revel Horwood; person: Arlene Phillips
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:
 person: Len Goodman; person: Bruno Tonioli; person: Craig Revel Horwood; person: Arlene Phillips