1172
Motivated by the success of ensemble methods in machine learning and other areas of natural language processing , we developed a multi-strategy and multi-source approach to question answering which is based on combining the results from different answering agents searching for answers in multiple corpora .
 used for: ensemble methods, machine learning; used for: ensemble methods, natural language processing; used for: multi-strategy and multi-source approach, question answering
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:  ensemble methods, machine learning; ensemble methods, natural language processing; multi-strategy and multi-source approach, question answering 
Answer:
 used for: ensemble methods, machine learning; used for: ensemble methods, natural language processing; used for: multi-strategy and multi-source approach, question answering