1857
By using a fast primal-dual algorithm we are able to handle several hundred motion segments .
 used for: primal-dual algorithm, motion segments
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: primal-dual algorithm, motion segments