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:2019-12-30, Stock:NVO, The news for the past five days is as follows:
2019-12-20: NEWS1: Should You Invest in the VanEck Vectors Pharmaceutical ETF (PPH)?.
2019-12-23: nan
2019-12-24: nan
2019-12-26: NEWS1: Pharma Companies Are Rushing to Treat a Little-Known Liver Disease. Investors Should Be Skeptical..
2019-12-27: nan

Answer: Decrease