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First , we develop an efficient spatio-temporal video segmentation algorithm , which naturally incorporates long-range motion cues from the past and future frames in the form of clusters of point tracks with coherent motion .
 used for: long-range motion cues, spatio-temporal video segmentation algorithm; used for: clusters of point tracks, long-range motion cues
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: long-range motion cues, spatio-temporal video segmentation algorithm; used for: clusters of point tracks, long-range motion cues