1041
CASE SUMMARY: A 65-year-old patient chronically treated with the selective serotonin reuptake inhibitor (SSRI) citalopram developed confusion, agitation, tachycardia, tremors, myoclonic jerks and unsteady gait, consistent with serotonin syndrome, following initiation of fentanyl, and all symptoms and signs resolved following discontinuation of fentanyl.
 65-year-old patient: Subject; 65-year-old: Subject.Age; confusion, agitation, tachycardia, tremors, myoclonic jerks and unsteady gait, consistent with serotonin syndrome: Effect; chronically treated with the selective serotonin reuptake inhibitor (SSRI) citalopram: Treatment; following initiation of fentanyl: Treatment; fentanyl: Treatment.Drug; citalopram: Treatment.Drug; chronically: Treatment.Duration; fentanyl: Combination.Drug; citalopram: Combination.Drug
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: adverse event 
  Option: Treatment.Freq, Subject.Population, Combination.Drug, Subject.Gender, Treatment.Duration, Subject, Effect, Treatment, Treatment.Disorder, Subject.Disorder, Treatment.Route, Subject.Race, Treatment.Time_elapsed, Treatment.Dosage, Subject.Age, Treatment.Drug 
Text: {0} 
Answer:
 65-year-old patient: Subject; 65-year-old: Subject.Age; confusion, agitation, tachycardia, tremors, myoclonic jerks and unsteady gait, consistent with serotonin syndrome: Effect; chronically treated with the selective serotonin reuptake inhibitor (SSRI) citalopram: Treatment; following initiation of fentanyl: Treatment; fentanyl: Treatment.Drug; citalopram: Treatment.Drug; chronically: Treatment.Duration; fentanyl: Combination.Drug; citalopram: Combination.Drug