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The paper experimentally demonstrates the effectiveness of discriminative patches as an unsupervised mid-level visual representation , suggesting that it could be used in place of visual words for many tasks .
 discriminative patches, unsupervised mid-level visual representation; it, discriminative patches
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:
 discriminative patches, unsupervised mid-level visual representation; it, discriminative patches