1466
Graph unification remains the most expensive part of unification-based grammar parsing .
 part of: Graph unification, unification-based grammar parsing
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:  Graph unification, unification-based grammar parsing 
Answer:
 part of: Graph unification, unification-based grammar parsing