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In this paper , we identify features of electronic discussions that influence the clustering process , and offer a filtering mechanism that removes undesirable influences .
 features, electronic discussions
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
Answer:
 features, electronic discussions