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:2020-07-21, Stock:RIO, The news for the past five days is as follows:
2020-07-14: nan
2020-07-15: nan
2020-07-16: NEWS1: Rio Tinto releases second quarter production results.NEWS2: Is Rio Tinto (RIO) Outperforming Other Basic Materials Stocks This Year?.
2020-07-17: NEWS1: Miner Rio Tinto Has Made an Upside Breakout - Go Long.NEWS2: Baltic index inches up on rising capesize rates.NEWS3: Warren Buffett may have found a stock he likes — his own.NEWS4: Rio Says Threat of Virus Second Wave Is Roiling Raw Materials.NEWS5: Rio Tinto posts strong second quarter iron ore shipments, sees China demand recovery.
2020-07-20: NEWS1: Iron Ore’s African Future Is Slowly Advancing, Rio Tinto Says.

Answer: Decrease