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:2018-06-28, Stock:RIO, The news for the past five days is as follows:
2018-06-21: nan
2018-06-22: NEWS1: What Do Analysts Think About Rio Tinto Limited’s (ASX:RIO) Earnings Outlook?.
2018-06-25: NEWS1: Freeport-McMoRan: What to Expect in 2018.
2018-06-26: NEWS1: Grasberg Mine: Freeport-McMoRan’s Outlook Is Murky.
2018-06-27: NEWS1: Yamana Gold Inc. (AUY) Ex-Dividend Date Scheduled for June 28, 2018.NEWS2: Yamana Gold Inc. (AUY) Ex-Dividend Date Scheduled for June 28, 2018.NEWS3: Kirkland Lake Gold Ltd. (KL) Ex-Dividend Date Scheduled for June 28, 2018.NEWS4: Kirkland Lake Gold Ltd. (KL) Ex-Dividend Date Scheduled for June 28, 2018.NEWS5: Osisko Gold Royalties Ltd (OR) Ex-Dividend Date Scheduled for June 28, 2018.NEWS6: Osisko Gold Royalties Ltd (OR) Ex-Dividend Date Scheduled for June 28, 2018.

Answer: Rise