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The film was also criticised by some right-wing commentators who objected to the film 's advocacy of nonviolence , including Pat Buchanan , Emmett Tyrrell , and especially Richard Grenier .
 person: Pat Buchanan; person: Emmett Tyrrell; person: Richard Grenier
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 person: Pat Buchanan; person: Emmett Tyrrell; person: Richard Grenier