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:2019-06-17, Stock:RIO, The news for the past five days is as follows:
2019-06-10: nan
2019-06-11: NEWS1: 6 Guru Stocks With Low Price-Sales Ratios.NEWS2: Franco-Nevada Corporation (FNV) Ex-Dividend Date Scheduled for June 12, 2019.NEWS3: Franco-Nevada Corporation (FNV) Ex-Dividend Date Scheduled for June 12, 2019.
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.

Answer: Decrease