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:2021-09-29, Stock:SNP, The news for the past five days is as follows:
2021-09-22: nan
2021-09-23: NEWS1: China Certifies First Shipment of Full Life Cycle Carbon-neutral Petroleum.NEWS2: China Certifies First Shipment of Full Life Cycle Carbon-neutral Petroleum.
2021-09-24: nan
2021-09-27: NEWS1: Why China Petro&Chm (SNP) is a Great Dividend Stock Right Now.
2021-09-28: nan

Answer: Decrease