9128
Given that discontinuation of nitrofurantoin and introduction of methylprednisolon therapy significantly lowered liver enzyme levels , restoring most of them to normal , we concluded that this was probably the case of toxic liver damage caused by nitrofurantoin .
 adverse effect: toxic liver damage, nitrofurantoin
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: adverse effect 
Text: {0} 
Answer:
 adverse effect: toxic liver damage, nitrofurantoin