316
A 73 year - old patient with Wolff - Parkinson - White syndrome and paroxysmic supraventricular tachycardia developed an acute reversible encephalopathy within 15 days of initiation of flecainide .
 adverse effect: acute reversible encephalopathy, flecainide
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: acute reversible encephalopathy, flecainide