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This paper explores the issue of using different co-occurrence similarities between terms for separating query terms that are useful for retrieval from those that are harmful .
 used for: co-occurrence similarities, query terms; used for: query terms, retrieval; compare: those, query terms
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:  co-occurrence similarities, query terms; query terms, retrieval; those, query terms 
Answer:
 used for: co-occurrence similarities, query terms; used for: query terms, retrieval; compare: those, query terms