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:2018-02-21, Stock:VALE, The news for the past five days is as follows:
2018-02-13: nan
2018-02-14: NEWS1: After Hours Most Active for Feb 14, 2018 :  BAC, GE, VALE, ORCL, FCX, TEVA.NEWS2: After Hours Most Active for Feb 14, 2018 :  BAC, GE, VALE, ORCL, FCX, TEVA.
2018-02-15: NEWS1: Vale S.A. Continues to Deliver Strong Price Gains, Higher Targets Seen.
2018-02-16: NEWS1: See How Carpenter Technology Corp. Ranks Among Analysts' Top Metals Picks.NEWS2: See How Carpenter Technology Corp. Ranks Among Analysts' Top Metals Picks.NEWS3: Pre-Market Most Active for Feb 16, 2018 :  QQQ, NOK, STM, AAPL, USLV, TEVA, TVIX, FOLD, QCOM, DB, KO, VALE.NEWS4: Pre-Market Most Active for Feb 16, 2018 :  QQQ, NOK, STM, AAPL, USLV, TEVA, TVIX, FOLD, QCOM, DB, KO, VALE.
2018-02-20: NEWS1: Vale Full-Year 2017 Production Review: S11D Ramp-Up Propels Iron Ore Output To Record High.NEWS2: Vale Full-Year 2017 Production Review: S11D Ramp-Up Propels Iron Ore Output To Record High.NEWS3: Peabody Energy Corporation (BTU), Vale SA (ADR) (VALE): Contrarian Capital Scored Big Betting on These Stocks.

Answer: Decrease