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:2021-03-23, Stock:RIO, The news for the past five days is as follows:
2021-03-16: nan
2021-03-17: NEWS1: Soaring prices spur miners' hunt for growth, fueling indigenous and investor ire.
2021-03-18: NEWS1: 5 Stocks to Keep an Eye on as Copper Prices Improve.
2021-03-19: NEWS1: Top Ranked Income Stocks to Buy for March 19th.NEWS2: The Zacks Analyst Blog Highlights: Rio Tinto, Southern Copper, Kaz Minerals, Freeport-McMoRan and BHP Group.NEWS3: ESG Investors Score Another Win at Rio, This Time on Climate.NEWS4: Addendum to Rio Tinto Limited notice of meeting.
2021-03-22: NEWS1: Aboriginal group has 'no visibility' on Rio Tinto's heritage reforms.NEWS2: Rio Tinto outlines path to stronger Cultural Heritage management.NEWS3: Fight Between Commodities Giants and Shippers Leaves Seafarers Stuck.NEWS4: Rio Tinto Group (LON:RIO) Has A Pretty Healthy Balance Sheet.

Answer: Decrease