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As one of the principal centres for research and development of weapons , the ITU was responsible for a number of successful designs introduced in the Polish Army of the epoch .
 organization: Polish Army
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Polish Army 
Answer:
 organization: Polish Army