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" Discordianism " is a paradigm based upon the book " Principia Discordia , " written by Greg Hill with Kerry Wendell Thornley in 1963 , the two working under the pseudonyms Malaclypse the Younger and Omar Khayyam Ravenhurst .
 person: Greg Hill; person: Kerry Wendell Thornley; person: Malaclypse the Younger; person: Omar Khayyam Ravenhurst
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: Greg Hill; person: Kerry Wendell Thornley; person: Malaclypse the Younger; person: Omar Khayyam Ravenhurst