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The directors , Nick Park and Steve Box , have often referred to the film as the world 's " first vegetarian horror film " .
 person: Nick Park; person: Steve Box
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: Nick Park; person: Steve Box