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We propose a unified variational formulation for joint motion estimation and segmentation with explicit occlusion handling .
 used for: unified variational formulation, joint motion estimation and segmentation; used for: explicit occlusion handling, unified variational formulation
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:  unified variational formulation, joint motion estimation and segmentation; explicit occlusion handling, unified variational formulation 
Answer:
 used for: unified variational formulation, joint motion estimation and segmentation; used for: explicit occlusion handling, unified variational formulation