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Two main classes of approaches have been studied to perform monocular nonrigid 3D reconstruction : Template-based methods and Non-rigid Structure from Motion techniques .
 used for: approaches, monocular nonrigid 3D reconstruction; hyponym of: Template-based methods, approaches; conjunction: Template-based methods, Non-rigid Structure from Motion techniques; hyponym of: Non-rigid Structure from Motion techniques, approaches
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:  approaches, monocular nonrigid 3D reconstruction; Template-based methods, approaches; Template-based methods, Non-rigid Structure from Motion techniques; Non-rigid Structure from Motion techniques, approaches 
Answer:
 used for: approaches, monocular nonrigid 3D reconstruction; hyponym of: Template-based methods, approaches; conjunction: Template-based methods, Non-rigid Structure from Motion techniques; hyponym of: Non-rigid Structure from Motion techniques, approaches