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A prospective randomized clinical trial was implemented to assess whether the concomitant or the sequential addition of tamoxifen to chemotherapy provides improved clinical benefit in the adjuvant treatment of breast cancer in postmenopausal patients.
 postmenopausal patients: Subject; postmenopausal: Subject.Disorder; improved clinical benefit in the adjuvant treatment: Effect; the concomitant or the sequential addition of tamoxifen to chemotherapy: Treatment; tamoxifen: Treatment.Drug; chemotherapy: Treatment.Route; breast cancer: 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: 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:
 postmenopausal patients: Subject; postmenopausal: Subject.Disorder; improved clinical benefit in the adjuvant treatment: Effect; the concomitant or the sequential addition of tamoxifen to chemotherapy: Treatment; tamoxifen: Treatment.Drug; chemotherapy: Treatment.Route; breast cancer: Treatment.Disorder