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The efficiency and quality is exhibited in a live demonstration that recognizes CD-covers from a database of 40000 images of popular music CD 's .
 conjunction: efficiency, quality; feature of: images of popular music CD 's, database
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:  efficiency, quality; images of popular music CD 's, database 
Answer:
 conjunction: efficiency, quality; feature of: images of popular music CD 's, database