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Ray Butt is a British television producer and director best known for his work on Only Fools and Horses in which he directed in series one and in series to follow he also directed and produced until series five when he moved onto new projects .
 Ray Butt, British
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ray Butt, British