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Cast Production Bob Ellis said the idea for the film came to Denny Lawrence as he and Ellis were travelling on a train and they wrote the script together .
 Bob Ellis, Denny Lawrence, Ellis
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bob Ellis, Denny Lawrence, Ellis