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:2020-02-24, Stock:RIO, The news for the past five days is as follows:
2020-02-14: NEWS1: EU launches anti-dumping investigation on China aluminium products.
2020-02-18: NEWS1: Chinese copper smelting activity slips in January - satellite index.NEWS2: BHP Can Afford to Go a Lot Greener.
2020-02-19: nan
2020-02-20: NEWS1: Rio Tinto seeks international arbitration on tax dispute with Mongolia.NEWS2: Oyu Tolgoi to pursue international arbitration.NEWS3: RPT-INSIGHT-Fires and climate fears rattle Australia's giant coal lobby.NEWS4: Fires and climate fears rattle Australia's giant coal lobby.NEWS5: INSIGHT-Fires and climate fears rattle Australia's giant coal lobby.
2020-02-21: NEWS1: How an Iron-Ore Billionaire Escapes ESG Scrutiny.NEWS2: Rio Tinto board changes.NEWS3: Rio Tinto looks to diversify board with addition of more women.

Answer: Decrease