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We have previously introduced a statistical model describing the generating process of speech F0 contours , based on the discrete-time version of the Fujisaki model .
 used for: statistical model, speech F0 contours; used for: Fujisaki model, statistical model
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: statistical model, speech F0 contours; used for: Fujisaki model, statistical model