3831
A model is presented to characterize the class of languages obtained by adding reduplication to context-free languages .
 used for: model, class of languages; used for: reduplication, context-free languages
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
 Entity Pairs:  model, class of languages; reduplication, context-free languages 
Answer:
 used for: model, class of languages; used for: reduplication, context-free languages