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:2020-09-21, Stock:RIO, The news for the past five days is as follows:
2020-09-14: NEWS1: Australia Aluminum Sector in Fight For Survival, Industry Warns.NEWS2: 10 Biggest Mining Companies.NEWS3: Is Rio Tinto (RIO) Outperforming Other Basic Materials Stocks This Year?.NEWS4: Company News for Sep 14, 2020.NEWS5: RPT-COLUMN-Aluminium producers' race to go green may fracture market: Andy Home.NEWS6: Rio Backed CEO After Blast, Then Watchdog Investors Revolted.
2020-09-15: NEWS1: Rio Tinto provides update of its beneficial ownership of common shares of Entrée Resources Ltd..
2020-09-16: NEWS1: Rio Tinto (RIO) is a Great Momentum Stock: Should You Buy?.NEWS2: Miner BHP says Aboriginal landowners free to speak on how it manages cultural heritage.NEWS3: Australia shares track U.S. peers higher; Fed in focus.NEWS4: U.S. Removes Canada Aluminum Tariffs Amid Retaliation Threat.NEWS5: Analyst Report: Rio Tinto Group.NEWS6: Technical Assessment: Bullish in the Intermediate-Term.
2020-09-17: nan
2020-09-18: nan

Answer: Decrease