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Currently several grammatical formalisms converge towards being declarative and towards utilizing context-free phrase-structure grammar as a backbone , e.g. LFG and PATR-II .
 context-free phrase-structure grammar, grammatical formalisms; LFG, grammatical formalisms; LFG, PATR-II; PATR-II, grammatical formalisms
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:
 context-free phrase-structure grammar, grammatical formalisms; LFG, grammatical formalisms; LFG, PATR-II; PATR-II, grammatical formalisms