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We describe a patient with a liver abscess due to Entamoeba histolytica, in whom metronidazole therapy (total dose, 21 g over 14 days) was complicated by reversible deafness, tinnitus, and ataxia and who relapsed 5 months later with a splenic abscess.
 a patient with a liver abscess due to Entamoeba histolytica: Subject; reversible deafness, tinnitus, and ataxia and who relapsed 5 months later with a splenic abscess: Effect; metronidazole therapy (total dose, 21 g over 14 days): Treatment; metronidazole: Treatment.Drug; 21 g: Treatment.Dosage; 14 days: Treatment.Duration; liver abscess: Treatment.Disorder; Entamoeba histolytica: Treatment.Disorder
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:
 a patient with a liver abscess due to Entamoeba histolytica: Subject; reversible deafness, tinnitus, and ataxia and who relapsed 5 months later with a splenic abscess: Effect; metronidazole therapy (total dose, 21 g over 14 days): Treatment; metronidazole: Treatment.Drug; 21 g: Treatment.Dosage; 14 days: Treatment.Duration; liver abscess: Treatment.Disorder; Entamoeba histolytica: Treatment.Disorder