2675
Ropinirole was added to his current therapy for Parkinson disease, with a corresponding decrease in the dose of levodopa/carbidopa to allow levodopa sparing.
 Ropinirole: Treatment; a corresponding decrease in the dose of levodopa/carbidopa to allow levodopa sparing: Treatment; Ropinirole: Treatment.Drug; levodopa: Treatment.Drug; carbidopa: Treatment.Drug; Parkinson disease: Treatment.Disorder; Ropinirole: Combination.Drug; levodopa: Combination.Drug; carbidopa: 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: 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:
 Ropinirole: Treatment; a corresponding decrease in the dose of levodopa/carbidopa to allow levodopa sparing: Treatment; Ropinirole: Treatment.Drug; levodopa: Treatment.Drug; carbidopa: Treatment.Drug; Parkinson disease: Treatment.Disorder; Ropinirole: Combination.Drug; levodopa: Combination.Drug; carbidopa: Combination.Drug