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We present the computational model for POS learning , and present results for applying it to Bulgarian , a Slavic language with relatively free word order and rich morphology .
 computational model, POS learning; Bulgarian, it; Bulgarian, Slavic language; free word order, Bulgarian; free word order, rich morphology; rich morphology, Bulgarian
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
Answer:
 computational model, POS learning; Bulgarian, it; Bulgarian, Slavic language; free word order, Bulgarian; free word order, rich morphology; rich morphology, Bulgarian