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:2018-10-15, Stock:RIO, The news for the past five days is as follows:
2018-10-08: NEWS1: Buybacks Are the Flavor of the Season amid Trade War Scare.NEWS2: Scars from the 2015 Meltdown Are Still Fresh for Miners.
2018-10-09: NEWS1: Asian Markets Mostly Lower In Cautious Trade.NEWS2: Asian Markets Mostly Lower In Cautious Trade.NEWS3: Australian Market Edges Lower.NEWS4: Australian Market Edges Lower.NEWS5: Copper Might Not Have a Joyride in the Next Decade.
2018-10-10: NEWS1: Asian Markets Tumble After Wall Street Sell-off.NEWS2: Asian Markets Tumble After Wall Street Sell-off.NEWS3: Top 5 Copper Stocks for 2018.NEWS4: Australian Market Tumbles.NEWS5: Australian Market Tumbles.NEWS6: Rio Tinto to restart sale of Icelandic aluminium plant - sources.NEWS7: Asian Shares Mixed As Growth Worries Weigh.NEWS8: Asian Shares Mixed As Growth Worries Weigh.
2018-10-11: NEWS1: Asian Markets Mostly Higher.NEWS2: Asian Markets Mostly Higher.NEWS3: Rio Tinto Expects Aluminium Demand Growth To Be About 3.2% Per Annum Next 5 Yrs.NEWS4: Rio Tinto Expects Aluminium Demand Growth To Be About 3.2% Per Annum Next 5 Yrs.NEWS5: Australian Market Pares Losses.NEWS6: Australian Market Pares Losses.NEWS7: Trafigura-backed copper miner Atalaya Mining seeks buyer -sources.NEWS8: Alamos Gold Inc. (AGI) Ex-Dividend Date Scheduled for October 12, 2018.NEWS9: Alamos Gold Inc. (AGI) Ex-Dividend Date Scheduled for October 12, 2018.NEWS10: [$$] Rio warns of further hit from old alumina contracts.
2018-10-12: NEWS1: Alcoa: What Can Investors Expect?.NEWS2: How The Pieces Add Up: SLX Headed For $53.NEWS3: How The Pieces Add Up: SLX Headed For $53.NEWS4: Alcoa: Should You Be Bottom Fishing?.

Answer: Rise