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It was adapted for film in 1977 , with Harold Prince directing and Elizabeth Taylor , Len Cariou , Lesley-Anne Down , and Diana Rigg starring .
 Harold Prince, Elizabeth Taylor, Len Cariou, Lesley-Anne Down, Diana Rigg
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Harold Prince, Elizabeth Taylor, Len Cariou, Lesley-Anne Down, Diana Rigg