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:2018-08-31, Stock:VALE, The news for the past five days is as follows:
2018-08-24: NEWS1: Notable ETF Outflow Detected - MXI, VALE, SHW, APD.NEWS2: Notable ETF Outflow Detected - MXI, VALE, SHW, APD.
2018-08-27: NEWS1: Monday's ETF with Unusual Volume: MXI.NEWS2: Monday's ETF with Unusual Volume: MXI.
2018-08-28: nan
2018-08-29: NEWS1: Should Value Investors Buy VALE S.A. (VALE) Stock?.NEWS2: Are Options Traders Betting on a Big Move in Vale S.A. (VALE) Stock?.
2018-08-30: NEWS1: How Long Can China’s Steel Prices Keep Supporting the Sector?.NEWS2: China Steel Production Hits New High.NEWS3: Has Trade War Affected China’s Steel and Iron Ore Demand?.NEWS4: Analysts Expect SLX Will Reach $53.NEWS5: Analysts Expect SLX Will Reach $53.

Answer: Rise