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We report the cases of two patients who developed acute hepatitis after taking riluzole at the recommended dose (100 mg daily) for 7 and 4 weeks, respectively.
 two patients: Subject; two: Subject.Population; acute hepatitis: Effect; riluzole at the recommended dose (100 mg daily) for 7 and 4 weeks: Treatment; riluzole: Treatment.Drug; 7 and 4 weeks: Treatment.Duration; 100 mg: Treatment.Dosage; daily: Treatment.Freq
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:
 two patients: Subject; two: Subject.Population; acute hepatitis: Effect; riluzole at the recommended dose (100 mg daily) for 7 and 4 weeks: Treatment; riluzole: Treatment.Drug; 7 and 4 weeks: Treatment.Duration; 100 mg: Treatment.Dosage; daily: Treatment.Freq