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:2021-11-18, Stock:RIO, The news for the past five days is as follows:
2021-11-11: NEWS1: Caterpillar (CAT), Newmont Partner to Attain Zero Emissions Mining.NEWS2: Palantir: The Perils of Extremism.
2021-11-12: nan
2021-11-15: nan
2021-11-16: NEWS1: Rio Tinto invests in InoBat.
2021-11-17: NEWS1: Rio Tinto Adds New Aluminum Production to Hot Metals Market.NEWS2: Rio Tinto invests to increase low-carbon AP60 aluminium production in Canada.NEWS3: 10 Best Mining Stocks To Buy Now.NEWS4: Aboriginal groups criticise Australian state's heritage bill.

Answer: Decrease