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:2021-07-30, Stock:RIO, The news for the past five days is as follows:
2021-07-23: NEWS1: Vodafone and miners support FTSE 100, as investors sift through mixed data.NEWS2: Questor: Rio Tinto may be cleaning up its act but the iron ore boom is on borrowed time.
2021-07-26: NEWS1: UPDATE 1-Rio Tinto to cut output to 35% at Canadian smelter amid union strike.NEWS2: BC Works (Kitimat) smelter reduces production following strike.NEWS3: Rio Tinto signs groundbreaking renewable energy agreement in Madagascar.NEWS4: Record Profits and Blockbuster Payouts: Here Come the Miners.NEWS5: Rio Tinto Smelter Workers Strike Over Contracts in Canada.
2021-07-27: NEWS1: Rio Expands in Battery Metals With $2.4 Billion Lithium Mine.NEWS2: Rio Tinto commits funding for Jadar lithium project.NEWS3: RIO or BHP: Which Is the Better Value Stock Right Now?.
2021-07-28: NEWS1: Rio Tinto Plc (RIO) Q2 2021 Earnings Call Transcript.NEWS2: Rio Tinto Pays $9.1 Billion Dividend as Profit Hits Record.NEWS3: European markets higher on busy day of financial results.NEWS4: In exceptional market conditions, Rio Tinto achieves record financial results and declares total interim dividend of 561 US cents per share, 75% of underlying earnings.
2021-07-29: NEWS1: UPDATE 2-Miner Turquoise Hill's profit beats on strong output, metal prices.NEWS2: Ancient Sites, Sacred Snake Raise Risks for Australian Resources.NEWS3: Is Rio Tinto (RIO) Stock Undervalued Right Now?.NEWS4: Gupta Pays $25 Million to End Long-Running Spat With Rio Tinto.NEWS5: £7bn boost as FTSE firms shower investors with dividends and buybacks.NEWS6: Anglo American's profit soars 1,000% thanks to China and battery demand.

Answer: Decrease