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Renal failure is a rare complication associated with the use of rifampicin for the treatment of tuberculosis , usually occurring well into the course of therapy .
 adverse effect: Renal failure, rifampicin
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: adverse effect 
Text: {0} 
 Entity Pairs:  Renal failure, rifampicin 
Answer:
 adverse effect: Renal failure, rifampicin