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Several hyperplane learning algorithms were used on the same classification task using the Principal Components of the texture and flowfield representation of the faces .
 used for: hyperplane learning algorithms, classification task; used for: Principal Components of the texture, hyperplane learning algorithms; used for: flowfield representation of the faces, hyperplane learning algorithms; conjunction: flowfield representation of the faces, Principal Components of the texture
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: hyperplane learning algorithms, classification task; used for: Principal Components of the texture, hyperplane learning algorithms; used for: flowfield representation of the faces, hyperplane learning algorithms; conjunction: flowfield representation of the faces, Principal Components of the texture