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As a first assistant director , he worked on a number of high-profile films , including the Star Wars and Indiana Jones series and the 1978 Superman , and with commercially and critically successful directors including Richard Attenborough , Steven Spielberg and Sydney Pollack .
 Richard Attenborough, Steven Spielberg, Sydney Pollack
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Richard Attenborough, Steven Spielberg, Sydney Pollack