3155
Multiple syncopal episodes started to occur during thalidomide treatment , and a Holter electrocardiogram showed multiple abnormalities , with an episode of sustained ventricular tachycardia .
 adverse effect: Multiple syncopal episodes, thalidomide; adverse effect: sustained ventricular tachycardia, thalidomide
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: Multiple syncopal episodes, thalidomide; adverse effect: sustained ventricular tachycardia, thalidomide