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In 1979 , under GKC 's ownership , the original theater design ( a single screen with a main floor and balcony ) was " quaded , " with the balcony made into its own separate floor and the screen divided in half to produce four individual screening spaces .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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