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:2020-09-23, Stock:RIO, The news for the past five days is as follows:
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
2020-09-21: NEWS1: 6 Cheap Stocks Paying a High Dividend Yield.NEWS2: 4 Mining Stocks in Focus With Iron Ore Prices at 6-Year High.NEWS3: Rio Tinto has not formally committed to review threatened sites, Aboriginal group says.
2020-09-22: NEWS1: Rio Tinto to develop bonded area operations for blending iron ore at Dalian port.

Answer: Decrease