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The painting was also briefly used as a background for a scene in the animated film " Heavy Traffic " ( 1973 ) by director Ralph Bakshi .
 person: Ralph Bakshi
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Ralph Bakshi