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Given the video streams acquired by two cameras placed on either side of a computer monitor , the proposed algorithm synthesises images from a virtual camera in arbitrary position -LRB- typically located within the monitor -RRB- to facilitate eye contact .
 used for: cameras, video streams; used for: algorithm, eye contact; used for: virtual camera, images; feature of: arbitrary position, virtual camera
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: cameras, video streams; used for: algorithm, eye contact; used for: virtual camera, images; feature of: arbitrary position, virtual camera