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:2021-04-22, Stock:NVS, The news for the past five days is as follows:
2021-04-15: NEWS1: CureVac says it is on track with COVID-19 vaccine as it posts earnings update.NEWS2: 5 Megacap Stocks With 19% to 32% Upside, According to Wall Street.NEWS3: Novartis agrees to make ingredients Roche's Actemra for COVID-19 patients.
2021-04-16: NEWS1: Novartis (NVS) Collaborates with Roche for API of RA Drug Actemra.
2021-04-19: NEWS1: Italy seeks domestic production of mRNA Covid vaccines.
2021-04-20: nan
2021-04-21: nan

Answer: Decrease