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:2021-06-18, Stock:RIO, The news for the past five days is as follows:
2021-06-11: NEWS1: FTSE 100 nears pre-pandemic high, while data show strongest U.K. growth in almost a year.NEWS2: Is WisdomTree International Hedged Quality Dividend Growth ETF (IHDG) a Strong ETF Right Now?.
2021-06-14: NEWS1: Estimating The Intrinsic Value Of Rio Tinto Group (LON:RIO).
2021-06-15: NEWS1: Rio Tinto and ARENA to study using hydrogen to reduce carbon emissions in alumina refining.NEWS2: Rio Tinto Stock Near Buy Zone; Showing Rising Relative Strength After Shares Climb 150%.
2021-06-16: NEWS1: Where Do Hedge Funds Stand On Caterpillar Inc. (CAT)?.NEWS2: Mining stocks fall as China plans metal reserves to curb commodity rallies.
2021-06-17: NEWS1: Rio Tinto opens new scandium plant in Canada.NEWS2: Rio Tinto confirms Peter Cunningham as Chief Financial Officer.NEWS3: CORRECTED-Alcoa details plans to cut carbon emissions from making alumina.

Answer: Decrease