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:2019-02-15, Stock:RIO, The news for the past five days is as follows:
2019-02-08: NEWS1: Which Analysts Expect Iron Ore Prices to Breach $100 and Why?.NEWS2: Vale’s Loss Is Its Peers’ Gain—More Upside for Miners?.NEWS3: ArcelorMittal's (MT) Earnings and Revenues Rise Y/Y in Q4.NEWS4: Will Iron Ore Breach $100 in the Wake of Vale’s Dam Collapse?.NEWS5: See How Hecla Mining Ranks Among Analysts' Top Metals Picks.NEWS6: See How Hecla Mining Ranks Among Analysts' Top Metals Picks.NEWS7: Arconic (ARNC) Beats Earnings & Revenue Estimates in Q4.NEWS8: Steel Dynamic to Buy 75% Stake in United Steel Supply.NEWS9: Southern Copper Corporation (SCCO) Ex-Dividend Date Scheduled for February 11, 2019.NEWS10: Southern Copper Corporation (SCCO) Ex-Dividend Date Scheduled for February 11, 2019.NEWS11: [$$] Stocks to watch: Anglo American, Centrica, Superdry, Daimler, Unite.
2019-02-11: NEWS1: The Remote Island Sitting on $58 Billion of Gold and Copper.NEWS2: Why Rio Tinto Stock Soared 12.3% in January.NEWS3: Why Rio Tinto Stock Soared 12.3% in January.NEWS4: Why Rio Tinto Stock Soared 12.3% in January.NEWS5: Steel Dynamic to Buy 75% Stake in United Steel Supply.NEWS6: Steel Dynamic to Buy 75% Stake in United Steel Supply.NEWS7: Arconic (ARNC) Beats Earnings & Revenue Estimates in Q4.NEWS8: Arconic (ARNC) Beats Earnings & Revenue Estimates in Q4.NEWS9: ArcelorMittal's (MT) Earnings and Revenues Rise Y/Y in Q4.NEWS10: ArcelorMittal's (MT) Earnings and Revenues Rise Y/Y in Q4.NEWS11: Why Iron Ore Is Up 20% This Year.
2019-02-12: NEWS1: Cleveland-Cliffs (CLF) Lags Earnings, Sales Estimates in Q4.NEWS2: Cleveland-Cliffs (CLF) Lags Earnings, Sales Estimates in Q4.NEWS3: Rio Tinto (RIO) Stock Upgraded to Buy.NEWS4: Rio Tinto (RIO) Stock Upgraded to Buy.NEWS5: Cleveland-Cliffs (CLF) Lags Earnings, Sales Estimates in Q4.NEWS6: Take-Two, Las Vegas Sands, Unilever, Rio Tinto and Celgene highlighted as Zacks Bull and Bear of the Day.NEWS7: Take-Two, Las Vegas Sands, Unilever, Rio Tinto and Celgene highlighted as Zacks Bull and Bear of the Day.NEWS8: Don’t Count Mining Stocks Out in a Slowdown, Goldman Sachs Says.NEWS9: Southern Copper (SCCO) Earnings & Sales Miss Estimates in Q4.NEWS10: Southern Copper (SCCO) Earnings & Sales Miss Estimates in Q4.NEWS11: Take-Two, Las Vegas Sands, Unilever, Rio Tinto and Celgene highlighted as Zacks Bull and Bear of the Day.NEWS12: How Vale’s Dam Burst Could Benefit Cleveland Cliffs.NEWS13: Southern Copper (SCCO) Earnings & Sales Miss Estimates in Q4.NEWS14: COLUMN-Vale iron ore dam disaster may force China steel mills to change: Russell.NEWS15: Copper Is Stuck Between a Rock and a Hard Place.NEWS16: COLUMN-Vale iron ore dam disaster may force China steel mills to change: Russell.NEWS17: [$$] Stocks to watch: Plus500, Michelin, Omnicom, Coty, Spire, Britvic.
2019-02-13: NEWS1: Why Freeport-McMoRan Is Surging Today.NEWS2: Huntsman (HUN) Q4 Earnings Miss, Revenues Beat Estimates.NEWS3: Huntsman (HUN) Q4 Earnings Miss, Revenues Beat Estimates.NEWS4: Huntsman (HUN) Q4 Earnings Miss, Revenues Beat Estimates.
2019-02-14: nan

Answer: Rise