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With the aid of a logic-based grammar formalism called extraposition grammars , Chat-80 translates English questions into the Prolog subset of logic .
 hyponym of: extraposition grammars, logic-based grammar formalism; used for: extraposition grammars, Chat-80
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
Answer:
 hyponym of: extraposition grammars, logic-based grammar formalism; used for: extraposition grammars, Chat-80