5700
In patients with chronic heart failure , spironolactone added to conventional treatment may lead to serious and , occasionally , fatal hyperkalaemia .
 adverse effect: serious and , occasionally , fatal hyperkalaemia, spironolactone
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:  serious and , occasionally , fatal hyperkalaemia, spironolactone 
Answer:
 adverse effect: serious and , occasionally , fatal hyperkalaemia, spironolactone