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:2020-04-21, Stock:RIO, The news for the past five days is as follows:
2020-04-14: NEWS1: American Pacific Mining Signs Definitive Agreement on Madison Metals’ Interest in the Permitted Madison Copper Gold Project in Montana, under Option with Rio Tinto.
2020-04-15: nan
2020-04-16: NEWS1: Rio Tinto releases first quarter production results.
2020-04-17: NEWS1: Rio Tinto increases COVID-19 screening measures at Perth Airport.NEWS2: Rio Tinto expects rising commodity demand from China.NEWS3: Rio Tinto gains as China demand for steel recovers.NEWS4: Fortune Will Favor Miners with Nerves of Steel.
2020-04-20: nan

Answer: Decrease