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Traditional linear Fukunaga-Koontz Transform -LRB- FKT -RRB- -LSB- 1 -RSB- is a powerful discriminative subspaces building approach .
 linear Fukunaga-Koontz Transform -LRB- FKT -RRB-, discriminative subspaces building approach
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
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Answer:
 linear Fukunaga-Koontz Transform -LRB- FKT -RRB-, discriminative subspaces building approach