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The 520ST is the first personal computer to come with a bitmapped color GUI , using a version of Digital Research 's GEM released in February 1985 .
 organization: Digital Research
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:
 organization: Digital Research