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:2021-02-17, Stock:RIO, The news for the past five days is as follows:
2021-02-09: nan
2021-02-10: NEWS1: Is Rio Tinto (RIO) Outperforming Other Basic Materials Stocks This Year?.
2021-02-11: NEWS1: Bestinfond's Top 4th-Quarter Trades.NEWS2: Denison (DNN) Looks Good: Stock Adds 5.1% in Session.
2021-02-12: NEWS1: U.S. judge will not stop land transfer for Rio Tinto mine in Arizona.NEWS2: UPDATE 2-U.S. judge will not stop land transfer for Rio Tinto mine in Arizona.
2021-02-16: NEWS1: Why Rio Tinto Stock Is Testing Multi-Year Highs?.NEWS2: Palantir Stock Slides on Mixed Fourth-Quarter Results.NEWS3: Rio Tinto and Hydro announce intention to close Aluchemie anode plant.NEWS4: Rio Tinto, two others sign deal to explore low-carbon iron in Canada.NEWS5: Rio Tinto teams up with Paul Wurth and SHS-Stahl-Holding-Saar on low-carbon iron in Canada.

Answer: Decrease