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Based in part on a book by evangelist Ralph Wilkerson , the idea for Beyond And Back was suggested to Sunn Pictures by a freelance writer who submitted a treatment for the film after reading about the film studio in Writer 's Digest .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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