3260
CONCLUSIONS : Acute severe hepatitis though rare is occasionally observed with EGFR inhibitors gefitinib or erlotinib .
 adverse effect: Acute severe hepatitis, erlotinib; adverse effect: Acute severe hepatitis, gefitinib
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:  Acute severe hepatitis, erlotinib; Acute severe hepatitis, gefitinib 
Answer:
 adverse effect: Acute severe hepatitis, erlotinib; adverse effect: Acute severe hepatitis, gefitinib