6493
A 78-year - old man with a transvenous cardioverter defibrillator system developed frequent shocks during oral procainamide therapy .
 adverse effect: shocks, procainamide
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:  shocks, procainamide 
Answer:
 adverse effect: shocks, procainamide