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We consider the problem of question-focused sentence retrieval from complex news articles describing multi-event stories published over time .
 used for: news articles, question-focused sentence retrieval; feature of: multi-event stories, news articles
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:  news articles, question-focused sentence retrieval; multi-event stories, news articles 
Answer:
 used for: news articles, question-focused sentence retrieval; feature of: multi-event stories, news articles