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:2018-08-09, Stock:RIO, The news for the past five days is as follows:
2018-08-02: NEWS1: VALE S.A. (VALE) Ex-Dividend Date Scheduled for August 03, 2018.NEWS2: VALE S.A. (VALE) Ex-Dividend Date Scheduled for August 03, 2018.NEWS3: Rio Tinto's Profit to Remain Pressured by Costs, Analysts Say.NEWS4: A 'weaker second half' awaits mining giant Rio Tinto: Exp....NEWS5: Rio Tinto is 'cutting to the bone,' expert says.
2018-08-03: NEWS1: Rising oil prices threaten to erode mining sector's profitability.
2018-08-06: NEWS1: Miners Set to Spend $11 Billion in Search of the Next Jackpot.NEWS2: Southern Copper Corporation (SCCO) Ex-Dividend Date Scheduled for August 07, 2018.NEWS3: Southern Copper Corporation (SCCO) Ex-Dividend Date Scheduled for August 07, 2018.NEWS4: [$$] Asia stocks mostly higher despite US-China brinkmanship.
2018-08-07: NEWS1: New Strong Sell Stocks for August 7th.NEWS2: New Strong Sell Stocks for August 7th.NEWS3: New Strong Sell Stocks for August 7th.NEWS4: [$$] Iron ore nears $70 as Beijing cracks down on pollution.
2018-08-08: NEWS1: Rio Tinto Plc (RIO) Ex-Dividend Date Scheduled for August 09, 2018.NEWS2: Rio Tinto Plc (RIO) Ex-Dividend Date Scheduled for August 09, 2018.NEWS3: Miners Spend on Shareholders, Not Projects.NEWS4: Glencore Keeps Its Powder Dry, But Hints at Bigger Returns.NEWS5: Glencore Keeping Powder Dry Poses Question: Deals or Dividends?.NEWS6: [$$] Miners Spend on Shareholders, Not Projects.

Answer: Decrease