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:2018-12-07, Stock:VALE, The news for the past five days is as follows:
2018-11-29: nan
2018-11-30: NEWS1: Lower Energy Prices: Boon or Bane for Copper Miners?.
2018-12-03: NEWS1: What to Watch in Commodities: Truce, OPEC+, Alberta, Iron, Tesla.
2018-12-04: NEWS1: Opening Bell, December 4, 2018.NEWS2: Today's Bell Ringer, December 4, 2018.
2018-12-06: NEWS1: Vale to buy mid-sized iron miner Ferrous Resources- filing.

Answer: Decrease