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:2021-10-13, Stock:RIO, The news for the past five days is as follows:
2021-10-06: nan
2021-10-07: nan
2021-10-08: NEWS1: How to get a 15pc yield next year as dividends reach record levels.
2021-10-11: NEWS1: Dow Falls, Oil Prices Rally—and What Else Is Happening in the Stock Market Today.NEWS2: Dow Rises, Alibaba Stock and Oil Prices Fly—and What Else Is Happening in the Stock Market Today.NEWS3: Dow Set to Slip, Alibaba Stock and Oil Prices Fly—and What Else Is Happening in the Stock Market Today.NEWS4: Rio Tinto’s Perth Airport vaccination clinics opens for mining industry.
2021-10-12: nan

Answer: Decrease