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The units had a robust motherboard in a spacious case , reminiscent of the BBC Micro , and so were more tolerant of home-modification than some of their contemporaries , which often had their components crammed into the smallest possible space .
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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:
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