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Westwood and SSI had artistic differences over a third Eye of the Beholder game , however , so Westwood chose to make their own RPG without the restrictions from the D&D rule set .
 Westwood, SSI, Westwood
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Westwood, SSI, Westwood