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:2018-01-23, Stock:RIO, The news for the past five days is as follows:
2018-01-16: NEWS1: Why Did JPMorgan Recently Downgrade Rio Tinto?.NEWS2: Vale Poised to Gain From Iron-Ore Price Rise Amid Headwinds.NEWS3: Vale Poised to Gain From Iron-Ore Price Rise Amid Headwinds.NEWS4: Miners: Getting Too Pricey?.NEWS5: Rio Tinto Gets First Copper From Giant Mine Since 2014.NEWS6: Rio Tinto targets modest hike in 2018 iron ore shipments.NEWS7: Will 2018 Be Alcoa Inc.'s Best Year Yet?.NEWS8: Will 2018 Be Alcoa Inc.'s Best Year Yet?.
2018-01-17: NEWS1: These Factors Are Affecting Vale SA’s Earnings Estimates.NEWS2: What to Expect from Cleveland-Cliffs’ Asia-Pacific Segment.NEWS3: Why Analysts’ Optimism for Vale SA Has Increased in Recent Months.NEWS4: Why Analysts Expect a Strong Pickup in Rio Tinto’s Margins.NEWS5: Rio Tinto says U.S. SEC fraud case should be dismissed.
2018-01-18: NEWS1: HudBay Minerals (HBM) and ArcelorMittal (MT) are Aggressive Growth Rank Buys.NEWS2: BHP Billiton's (BHP) Iron-Ore Output Flat Y/Y in 1H FY18.NEWS3: BHP Billiton's (BHP) Iron-Ore Output Flat Y/Y in 1H FY18.NEWS4: Look Out for These Valuation Catalysts for Iron Ore in 2018.NEWS5: BHP Billiton&apos;s (BHP) Iron-Ore Output Flat Y/Y in 1H FY18.NEWS6: 4 Reasons Alcoa Missed Its 4Q17 Earnings Estimates.NEWS7: Is the Pullback in Iron Ore Miners Based on Technical Indicators?.NEWS8: How Analysts View Cleveland-Cliffs’ Earnings for 2017 and Beyond.NEWS9: Top Stocks in Mining.NEWS10: Top Stocks in Mining.NEWS11: Why Alcoa’s 2018 Guidance Miffed Analysts.
2018-01-19: NEWS1: These Factors Could Lead to Upside to CLF’s Free Cash Flow.NEWS2: European Shares Follow Asian Peers Higher.NEWS3: European Shares Follow Asian Peers Higher.NEWS4: FTSE 100 Little Changed Amid Profit Warnings.NEWS5: FTSE 100 Little Changed Amid Profit Warnings.NEWS6: HudBay Minerals (HBM) and ArcelorMittal (MT) are Aggressive Growth Rank Buys.NEWS7: HudBay Minerals (HBM) and ArcelorMittal (MT) are Aggressive Growth Rank Buys.
2018-01-22: NEWS1: Alcoa Discussed Aluminum’s Demand-Supply Equation.NEWS2: Are Analysts’ Estimates for Freeport’s Revenues Conservative?.NEWS3: Rio Tinto digs deeper into Mongolia.

Answer: Decrease