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:2021-10-21, Stock:SNP, The news for the past five days is as follows:
2021-10-14: nan
2021-10-15: NEWS1: Can Sinopec's (SNP) Fuling Field Help Meet Mounting Demand?.NEWS2: Exclusive-China looks to lock in U.S. LNG as energy crunch raises concerns -sources.
2021-10-18: NEWS1: Sinopec Puts Largest Gas Storage Cluster in North China into Operation, Providing 10 Billion Cubic Meters of Gas Storage.NEWS2: Sinopec Puts Largest Gas Storage Cluster in North China into Operation, Providing 10 Billion Cubic Meters of Gas Storage.
2021-10-19: nan
2021-10-20: nan

Answer: Decrease