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:2018-10-18, Stock:VALE, The news for the past five days is as follows:
2018-10-11: nan
2018-10-12: NEWS1: PRESS DIGEST- Financial Times - Oct 12.
2018-10-15: NEWS1: Is VALE S.A. (VALE) Stock Undervalued Right Now?.NEWS2: Is VALE S.A. (VALE) Stock Undervalued Right Now?.NEWS3: Is VALE (VALE) Stock Outpacing Its Basic Materials Peers This Year?.NEWS4: Is VALE (VALE) Stock Outpacing Its Basic Materials Peers This Year?.NEWS5: Is VALE (VALE) Stock Outpacing Its Basic Materials Peers This Year?.NEWS6: Is VALE S.A. (VALE) Stock Undervalued Right Now?.NEWS7: Brazil's Vale third-quarter iron ore output hits all-time high.
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.

Answer: Decrease