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We report the first case of polymorphic ventricular tachycardia with normal QT interval associated with the oral use of levofloxacin in the absence of other etiologies known to cause these arrhythmias.
 the first case: Subject; polymorphic ventricular tachycardia with normal QT interval: Effect; arrhythmias: Effect; oral use of levofloxacin: Treatment; oral: Treatment.Route; levofloxacin: Treatment.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:
 the first case: Subject; polymorphic ventricular tachycardia with normal QT interval: Effect; arrhythmias: Effect; oral use of levofloxacin: Treatment; oral: Treatment.Route; levofloxacin: Treatment.Drug