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:2020-04-15, Stock:NVS, The news for the past five days is as follows:
2020-04-07: NEWS1: Biotech Stocks, ETFs to Gain on COVID-19 Vaccine & Drug Progress.NEWS2: The Zacks Analyst Blog Highlights: Johnson & Johnson, Merck & Co, Novartis, PayPal and IBM.
2020-04-08: nan
2020-04-09: nan
2020-04-13: NEWS1: Alnylam plans Cambridge expansion after $2B investment.
2020-04-14: NEWS1: Biotech Giant Amgen Entered The Coronavirus Arena — But Is It A Buy?.

Answer: Decrease