5178
The scheme builds upon popular techniques of indexing descriptors extracted from local regions , and is robust to background clutter and occlusion .
 scheme, background clutter; scheme, occlusion; indexing descriptors, scheme; local regions, indexing descriptors; background clutter, occlusion
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:
 scheme, background clutter; scheme, occlusion; indexing descriptors, scheme; local regions, indexing descriptors; background clutter, occlusion