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As unification-based grammatical frameworks are extended to handle richer descriptions of linguistic information , they begin to share many of the properties that have been developed in KL-ONE-like knowledge representation systems .
 unification-based grammatical frameworks, linguistic information; KL-ONE-like knowledge representation systems, they
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:
 unification-based grammatical frameworks, linguistic information; KL-ONE-like knowledge representation systems, they