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Significantly improved accuracy can be achieved by applying the rotation-invariant features to classify SAR -LRB- synthetic aperture radar -RRB- sea ice and Brodatz imagery .
 used for: rotation-invariant features, SAR -LRB- synthetic aperture radar
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:  rotation-invariant features, SAR -LRB- synthetic aperture radar 
Answer:
 used for: rotation-invariant features, SAR -LRB- synthetic aperture radar