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:2018-02-28, Stock:RIO, The news for the past five days is as follows:
2018-02-21: NEWS1: Which Miners Could See Higher Copper Production in 2018?.NEWS2: Freeport-McMoRan’s 4Q17 Production Profile versus Other Miners’.NEWS3: Factbox: GFG Alliance to maintain rapid pace of expansion.NEWS4: Trump Has Done Nothing To Save Coal, Bush Environmental Czar Says.
2018-02-22: NEWS1: Rio Tinto says changing structure, moving some staff.NEWS2: How Would Quotas Affect US Aluminum Buyers?.NEWS3: What Makes Grasberg the Crown Jewel of Freeport’s Portfolio.NEWS4: Why Freeport Expects Its Unit Cash Costs to Fall Further in 2018.NEWS5: [$$] Rio Tinto considers moving UK support staff to global hubs.NEWS6: 3 Commodity Stocks That May Soar 20% on Inflation.
2018-02-23: NEWS1: Why Iron Ore Prices Are Defying Expectations of a Pullback.NEWS2: US tax cuts can make 'massive difference' in investing decisions: Global mining CEO.NEWS3: Rio Tinto CEO: Corporate tax rate can make a massive diff....NEWS4: BHP Billiton's (BHP) 1H FY18 Earnings & Revenues Up Y/Y.NEWS5: BHP Billiton's (BHP) 1H FY18 Earnings & Revenues Up Y/Y.NEWS6: What’s the Core Issue Facing the Global Aluminum Industry?.NEWS7: [$$] Rio to build power station at copper, gold mine in Mongolia.NEWS8: Mongolia's Oyu Tolgoi weighs power supply options amid plant delays.
2018-02-26: NEWS1: Miners Post Record Earnings as Commodities Rebound.NEWS2: A Comparative Analysis of Copper Miners’ Financial Positions.NEWS3: Miner Freeport says no plans to sell Congo cobalt asset as buyers circle.NEWS4: Why Iron Ore Exports Aren’t Slowing Down Anytime Soon.NEWS5: Barrick Gold Corporation (ABX) Ex-Dividend Date Scheduled for February 27, 2018.NEWS6: Barrick Gold Corporation (ABX) Ex-Dividend Date Scheduled for February 27, 2018.NEWS7: Analysts’ Take on Iron Ore Prices in 2018.NEWS8: Norway's Hydro buys Rio's Iceland aluminium plant in green drive.NEWS9: [$$] Rio Tinto strikes deal to offload last European aluminium assets.NEWS10: [$$] Rio Tinto Gets $345M Offer for Aluminum Assets.
2018-02-27: NEWS1: What to Expect From Vale’s Fourth Quarter Results.NEWS2: What to Expect From Vale’s Fourth Quarter Results.NEWS3: Steel ETF Soaring: Will the Trend Continue?.NEWS4: Steel ETF Soaring: Will the Trend Continue?.NEWS5: What Freeport-McMoRan’s Leverage Ratios Look Like in 2018.NEWS6: Will China’s Steel Production Pick Up after March 2018?.NEWS7: Agnico Eagle Mines Limited (AEM) Ex-Dividend Date Scheduled for February 28, 2018.NEWS8: Agnico Eagle Mines Limited (AEM) Ex-Dividend Date Scheduled for February 28, 2018.NEWS9: Miners’ Debt Continues to Fall amid Strong Commodity Prices.NEWS10: China’s Iron Ore Imports Near Record-High: Impact on Prices.NEWS11: Comparing Freeport’s Interest Coverage Ratio to Southern Copper.NEWS12: The Gap between Iron Ore Port Inventories and Commodity Prices.

Answer: Decrease