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In this paper we describe a novel data structure for phrase-based statistical machine translation which allows for the retrieval of arbitrarily long phrases while simultaneously using less memory than is required by current decoder implementations .
 data structure, phrase-based statistical machine translation; data structure, retrieval of arbitrarily long phrases
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:
 data structure, phrase-based statistical machine translation; data structure, retrieval of arbitrarily long phrases