7927
The literature search found 12 cases of radiation recall caused by gemcitabine .
 adverse effect: radiation recall, gemcitabine
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:  radiation recall, gemcitabine 
Answer:
 adverse effect: radiation recall, gemcitabine