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We are the first to bring the closed form solution to such a very practical problem arising in video surveillance .
 closed form solution, problem; video surveillance, problem
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
Answer:
 closed form solution, problem; video surveillance, problem