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:2018-10-23, Stock:VALE, The news for the past five days is as follows:
2018-10-16: NEWS1: Could Strong Physical Demand Support Copper Miners?.NEWS2: Is There a Disconnect between Copper Prices and Fundamentals?.NEWS3: Brazil's Vale to wait for major price rebound before investing in nickel - CEO.
2018-10-17: NEWS1: Rising Iron-Ore Prices Seem to Defy Economic Logic.NEWS2: Are Mining Companies Bullish on Copper?.NEWS3: How the Markets Are Valuing Freeport-McMoRan.
2018-10-18: nan
2018-10-19: NEWS1: 4 Stocks to Invest in for Rock-Solid Earnings Acceleration.NEWS2: 4 Stocks to Invest in for Rock-Solid Earnings Acceleration.NEWS3: Is Vale S.A. a Buy?.NEWS4: Is Vale S.A. a Buy?.NEWS5: Is Vale S.A. a Buy?.
2018-10-22: NEWS1: Brazilian pension fund Previ won't sell Vale shares before yr end -CEO.NEWS2: Brazilian pension fund Previ won't sell Vale shares before year end- CEO.NEWS3: Zacks.com featured highlights include: McCormick, Helen of Troy, Vale and Raytheon.NEWS4: Zacks.com featured highlights include: McCormick, Helen of Troy, Vale and Raytheon.NEWS5: Is Freeport Cheaper Now Compared to Its 2016 Lows?.NEWS6: Companies Play It Safe amid Uncertain Economic Outlook.NEWS7: Zacks.com featured highlights include: McCormick, Helen of Troy, Vale and Raytheon.NEWS8: Should Freeport Consider a Share Buyback?.

Answer: Decrease