1753
The model appears capable of accommodating the sort of reduplications that have been observed to occur in natural languages , but it excludes many of the unnatural constructions that other formal models have permitted .
 model, reduplications
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:
 model, reduplications