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Kolektiv then counted in 400 employees , of which 2 % are university graduates , with 4 % higher , 11 % with medium , 1 % with a low , 13 % of highly qualified workers , 38 % of qualified workers , 12 % of semi-skilled and 23 % unskilled workers .
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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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