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Furthermore , this paper presents a novel algorithm for the temporal maintenance of a background model to enhance the rendering of occlusions and reduce temporal artefacts -LRB- flicker -RRB- ; and a cost aggregation algorithm that acts directly on our three-dimensional matching cost space .
 used for: algorithm, temporal maintenance of a background model; used for: algorithm, rendering of occlusions; used for: algorithm, temporal artefacts -LRB- flicker -RRB-; conjunction: cost aggregation algorithm, algorithm; used for: cost aggregation algorithm, three-dimensional matching cost space
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: algorithm, temporal maintenance of a background model; used for: algorithm, rendering of occlusions; used for: algorithm, temporal artefacts -LRB- flicker -RRB-; conjunction: cost aggregation algorithm, algorithm; used for: cost aggregation algorithm, three-dimensional matching cost space