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Second , we describe the graphical model for the machine translation task , which can also be viewed as a stochastic tree-to-tree transducer .
 graphical model, machine translation task; stochastic tree-to-tree transducer, graphical model
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:
 graphical model, machine translation task; stochastic tree-to-tree transducer, graphical model