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:2021-01-28, Stock:RIO, The news for the past five days is as follows:
2021-01-21: nan
2021-01-22: NEWS1: TIMELINE-The battle for Simandou.NEWS2: Rio Tinto Group's (RIO) Shares March Higher, Can It Continue?.
2021-01-25: NEWS1: Is Rio Tinto (RIO) Outperforming Other Basic Materials Stocks This Year?.
2021-01-26: nan
2021-01-27: NEWS1: Rio Tinto reshuffles top deck to mend Indigenous ties.NEWS2: Rio Tinto unveils new Executive team.

Answer: Decrease