5257
The system utilizes typed feature structures to control the top-down derivation in a declarative way .
 used for: typed feature structures, system; used for: typed feature structures, top-down derivation
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:  typed feature structures, system; typed feature structures, top-down derivation 
Answer:
 used for: typed feature structures, system; used for: typed feature structures, top-down derivation