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:2019-06-19, Stock:RIO, The news for the past five days is as follows:
2019-06-12: NEWS1: Vale’s Woes Keep Mounting.NEWS2: Are Insiders Selling Rio Tinto Group (LON:RIO) Stock?.
2019-06-13: NEWS1: Vale’s Woes Keep Mounting.NEWS2: Vale’s Woes Keep Mounting.
2019-06-14: NEWS1: Supply or Demand: What Will Weigh on Iron Ore Prices More?.NEWS2: Rio Tinto reveals government contracts.
2019-06-17: NEWS1: Miners Pull ASX 200 Down, NZX 50 and Singapore Are Down Too.
2019-06-18: NEWS1: New Strong Buy Stocks for June 18th.NEWS2: New Strong Buy Stocks for June 18th.NEWS3: Iron Ore Prices Surge to 5-Year High on Supply Crunch Fears.NEWS4: Iron Ore Prices Surge to 5-Year High on Supply Crunch Fears.NEWS5: Iron Ore Prices Surge to 5-Year High on Supply Crunch Fears.NEWS6: New Strong Buy Stocks for June 18th.

Answer: Decrease