Based on the news about the stock in the past five trading days, please predict the rise or fall of the stock in the next trading day. If the stock is predicted to rise in the next trading day, please output [Rise], if the stock is predicted to fall in the next trading day, please output [Decrease].

Date:2018-09-19, Stock:NVS, The news for the past five days is as follows:
2018-09-12: NEWS1: NVS: PARADIGMS Study Shows Benefit Of Gilenya In Children & Adolescents With MS.NEWS2: NVS: PARADIGMS Study Shows Benefit Of Gilenya In Children & Adolescents With MS.
2018-09-13: NEWS1: Novartis: Real-world Evidence Confirms Efficacy Of Cosentyx - Quick Facts.NEWS2: Novartis: Real-world Evidence Confirms Efficacy Of Cosentyx - Quick Facts.
2018-09-14: nan
2018-09-17: nan
2018-09-18: nan

Answer: Decrease