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:2021-11-19, Stock:SNP, The news for the past five days is as follows:
2021-11-12: nan
2021-11-15: nan
2021-11-16: nan
2021-11-17: NEWS1: Sinopec Successfully Completes China's First Industrial Application of Crude Oil Steam-Cracking Technology.NEWS2: Sinopec Successfully Completes China's First Industrial Application of Crude Oil Steam-Cracking Technology.NEWS3: China's Sinopec completes successful trial of crude to olefin technology.
2021-11-18: nan

Answer: Decrease