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:2021-01-05, Stock:RIO, The news for the past five days is as follows:
2020-12-28: nan
2020-12-29: NEWS1: 15 Biggest Mining Companies In The World.NEWS2: Is Rio Tinto PLC (RIO) a Good Value Investor Stock Now?.
2020-12-30: nan
2020-12-31: nan
2021-01-04: NEWS1: 5 Solid Dividend-Paying Growth Stocks to Enrich Your Portfolio.NEWS2: How Much Are Rio Tinto Group (LON:RIO) Insiders Spending On Buying Shares?.

Answer: Rise