5123
Four months after receiving an orthotopic liver transplant , a 51-year - old man was admitted for progressive liver failure and severe hepatocellular necrosis thought to be due to tacrolimus .
 adverse effect: progressive liver failure, tacrolimus; adverse effect: severe hepatocellular necrosis, tacrolimus
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:  progressive liver failure, tacrolimus; severe hepatocellular necrosis, tacrolimus 
Answer:
 adverse effect: progressive liver failure, tacrolimus; adverse effect: severe hepatocellular necrosis, tacrolimus