2421
It is argued that the resulting algorithm is both efficient and flexible and is , therefore , a good choice for the parser used in a natural language interface .
 used for: algorithm, parser; used for: parser, natural language interface
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:  algorithm, parser; parser, natural language interface 
Answer:
 used for: algorithm, parser; used for: parser, natural language interface