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The nonlinear scale space is built using efficient Additive Operator Splitting -LRB- AOS -RRB- techniques and variable con-ductance diffusion .
 used for: Additive Operator Splitting -LRB- AOS -RRB- techniques, nonlinear scale space; conjunction: Additive Operator Splitting -LRB- AOS -RRB- techniques, variable con-ductance diffusion; used for: variable con-ductance diffusion, nonlinear scale space
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
Answer:
 used for: Additive Operator Splitting -LRB- AOS -RRB- techniques, nonlinear scale space; conjunction: Additive Operator Splitting -LRB- AOS -RRB- techniques, variable con-ductance diffusion; used for: variable con-ductance diffusion, nonlinear scale space