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An 80-year-old white female, followed up at the Memory Clinic for mild cognitive impairment, had been taking propafenone 900 mg/d for >10 years for paroxysmal atrial fibrillation without adverse effects.
 An 80-year-old white female: Subject; 80-year-old: Subject.Age; white: Subject.Race; female: Subject.Gender; mild cognitive impairment: Subject.Disorder; propafenone 900 mg/d for >10 years: Treatment; paroxysmal atrial fibrillation: Treatment.Disorder; propafenone: Treatment.Drug; 900 mg/d: Treatment.Dosage; >10 years: Treatment.Duration
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: potential therapeutic event 
  Option: Treatment.Freq, Subject.Population, Combination.Drug, Subject.Gender, Treatment.Duration, Subject, Effect, Treatment, Treatment.Disorder, Treatment.Time_elapsed, Subject.Disorder, Subject.Race, Treatment.Route, Treatment.Dosage, Subject.Age, Treatment.Drug 
Text: {0} 
Answer:
 An 80-year-old white female: Subject; 80-year-old: Subject.Age; white: Subject.Race; female: Subject.Gender; mild cognitive impairment: Subject.Disorder; propafenone 900 mg/d for >10 years: Treatment; paroxysmal atrial fibrillation: Treatment.Disorder; propafenone: Treatment.Drug; 900 mg/d: Treatment.Dosage; >10 years: Treatment.Duration