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:2021-03-23, Stock:NVS, The news for the past five days is as follows:
2021-03-16: nan
2021-03-17: NEWS1: Surface Oncology Rises on Rumor ARK's Cathie Wood Will Talk About It At Event.
2021-03-18: nan
2021-03-19: NEWS1: 1 Stock Warren Buffett and Cathie Wood Have in Common and 1 They Should.
2021-03-22: NEWS1: Novartis appoints Karen Hale as Chief Legal Officer.

Answer: Decrease