2897
Task-based evaluation using Arabic information retrieval indicates an improvement of 22-38 % in average precision over unstemmed text , and 96 % of the performance of the proprietary stemmer above .
 used for: Arabic information retrieval, Task-based evaluation; evaluate for: average precision, Task-based evaluation; evaluate for: average precision, unstemmed text
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:  Arabic information retrieval, Task-based evaluation; average precision, Task-based evaluation; average precision, unstemmed text 
Answer:
 used for: Arabic information retrieval, Task-based evaluation; evaluate for: average precision, Task-based evaluation; evaluate for: average precision, unstemmed text