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:2019-08-13, Stock:RIO, The news for the past five days is as follows:
2019-08-06: NEWS1: Edited Transcript of RIO.L earnings conference call or presentation 1-Aug-19 9:00am GMT.NEWS2: See How Arch Coal Ranks Among Analysts' Top Picks With Strong Buyback Activity.NEWS3: See How Arch Coal Ranks Among Analysts' Top Picks With Strong Buyback Activity.NEWS4: Ex-Dividend Reminder: Columbus McKinnon Corp., Rio Tinto and Sonoco Products.NEWS5: Ex-Dividend Reminder: Columbus McKinnon Corp., Rio Tinto and Sonoco Products.NEWS6: Southern Copper Corporation (SCCO) Ex-Dividend Date Scheduled for August 07, 2019.NEWS7: Southern Copper Corporation (SCCO) Ex-Dividend Date Scheduled for August 07, 2019.
2019-08-07: nan
2019-08-08: NEWS1: Rio Tinto CEO Defends Company as ‘Cash Machine’ Amid Stock Retreat.NEWS2: Do Barclays, JP Morgan, And Credit Suisse Agree On Vale’s Stock Price Estimate?.NEWS3: Do Barclays, JP Morgan, And Credit Suisse Agree On Vale’s Stock Price Estimate?.
2019-08-09: NEWS1: Rio Tinto's Resolution copper project in Arizona moves step closer.NEWS2: See How Rio Tinto Ranks Among Analysts' Top Metals Picks.NEWS3: See How Rio Tinto Ranks Among Analysts' Top Metals Picks.
2019-08-12: nan

Answer: Rise