6512
Serotonin syndrome caused by interaction between citalopram and fentanyl .
 adverse effect: Serotonin syndrome, citalopram; adverse effect: Serotonin syndrome, fentanyl
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:  Serotonin syndrome, citalopram; Serotonin syndrome, fentanyl 
Answer:
 adverse effect: Serotonin syndrome, citalopram; adverse effect: Serotonin syndrome, fentanyl