441
A further reduction in the search space is achieved by using semantic rather than syntactic categories on the terminal and non-terminal edges , thereby reducing the amount of ambiguity and thus the number of edges , since only edges with a valid semantic interpretation are ever introduced .
 used for: semantic, reduction in the search space; compare: semantic, syntactic categories; feature of: semantic, terminal and non-terminal edges; feature of: syntactic categories, terminal and non-terminal edges
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:  semantic, reduction in the search space; semantic, syntactic categories; semantic, terminal and non-terminal edges; syntactic categories, terminal and non-terminal edges 
Answer:
 used for: semantic, reduction in the search space; compare: semantic, syntactic categories; feature of: semantic, terminal and non-terminal edges; feature of: syntactic categories, terminal and non-terminal edges