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:2018-06-21, Stock:VALE, The news for the past five days is as follows:
2018-06-14: NEWS1: Samarco Is Close to a Settlement With Brazil Prosecutors.
2018-06-15: NEWS1: See How Kaiser Aluminum Corp. Ranks Among Analysts' Top Metals Picks.NEWS2: See How Kaiser Aluminum Corp. Ranks Among Analysts' Top Metals Picks.NEWS3: Battery Boom Drives Vale to Sign Major Cobalt Deal.NEWS4: Battery Boom Drives Vale to Sign Major Cobalt Deal.
2018-06-18: nan
2018-06-19: NEWS1: Pre-Market Most Active for Jun 19, 2018 :  QQQ, INDY, TVIX, SQQQ, USLV, FCAU, TWTR, MU, VALE, SNAP, GME, T.NEWS2: Pre-Market Most Active for Jun 19, 2018 :  QQQ, INDY, TVIX, SQQQ, USLV, FCAU, TWTR, MU, VALE, SNAP, GME, T.
2018-06-20: nan

Answer: Decrease