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:2021-03-31, Stock:RIO, The news for the past five days is as follows:
2021-03-24: NEWS1: Bill Gates-backed solar start-up to power Rio Tinto mines.NEWS2: Updating Rio Tinto - The Tide Has Turned.NEWS3: Rio Tinto selects Heliogen’s breakthrough solar technology to provide carbon-free energy to Boron mine.
2021-03-25: NEWS1: Top Ranked Income Stocks to Buy for March 25th.NEWS2: Rio Tinto accused of concealing real reasons for Mongolia mine delay.
2021-03-26: NEWS1: Are Investors Undervaluing Rio Tinto (RIO) Right Now?.
2021-03-29: NEWS1: Australian Aboriginal group opposes billionaire miner's plan to build dams.NEWS2: Rio Tinto faces backlash over former chief’s exit package.
2021-03-30: NEWS1: UPDATE 1-Turquoise Hill's Oyu Tolgoi declares force majeure on some Chinese contracts.

Answer: Decrease