256
Both had impaired lung function and abnormal computed tomographic scans , and their condition improved when nitrofurantoin was withdrawn and corticosteroid treatment commenced .
 adverse effect: abnormal computed tomographic scans, nitrofurantoin; adverse effect: impaired lung function, 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: abnormal computed tomographic scans, nitrofurantoin; adverse effect: impaired lung function, nitrofurantoin