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:2018-11-29, Stock:RIO, The news for the past five days is as follows:
2018-11-21: nan
2018-11-23: NEWS1: [$$] How robot trains are boosting Australia’s mining industry.
2018-11-26: NEWS1: Asian Markets Mixed On Trade Worries.NEWS2: Asian Markets Mixed On Trade Worries.NEWS3: Australian Market Rebounds.NEWS4: Australian Market Rebounds.NEWS5: Silvercorp Metals Inc. (SVM) Ex-Dividend Date Scheduled for November 27, 2018.NEWS6: Silvercorp Metals Inc. (SVM) Ex-Dividend Date Scheduled for November 27, 2018.NEWS7: Analysts Still Love Glencore despite the Commodity Rout.NEWS8: [$$] BHP flags potential new copper deposit in South Australia.NEWS9: [$$] Opening Quote: Rio Tinto’s $100m CNUC-lear deal .NEWS10: China Oct alumina exports to Iceland top 100,000 T -customs.NEWS11: [$$] Rio Tinto sells African uranium mine to China.NEWS12: [$$] Rio Tinto: cast offs.NEWS13: Rio Tinto to sell its stake in Rössing Uranium for up to $106.5 million.NEWS14: Rio Tinto To Sell Entire Stake In RÃ¶ssing Uranium For Up To $106.5 Mln.NEWS15: Rio Tinto To Sell Entire Stake In RÃ¶ssing Uranium For Up To $106.5 Mln.
2018-11-27: NEWS1: Asian Markets Mostly Higher Amid Cautious Trades.NEWS2: Asian Markets Mostly Higher Amid Cautious Trades.NEWS3: Australian Market Edges Lower.NEWS4: Australian Market Edges Lower.NEWS5: Investors Are Undervaluing Rio Tinto plc (LON:RIO) By 28.72%.
2018-11-28: NEWS1: Asian Markets Mostly Higher As Fed Strikes Dovish Tone.NEWS2: Asian Markets Mostly Higher As Fed Strikes Dovish Tone.NEWS3: Australian Market Advances.NEWS4: Australian Market Advances.NEWS5: Barrick Gold Corporation (ABX) Ex-Dividend Date Scheduled for November 29, 2018.NEWS6: Barrick Gold Corporation (ABX) Ex-Dividend Date Scheduled for November 29, 2018.NEWS7: Agnico Eagle Mines Limited (AEM) Ex-Dividend Date Scheduled for November 29, 2018.NEWS8: Agnico Eagle Mines Limited (AEM) Ex-Dividend Date Scheduled for November 29, 2018.NEWS9: Wheaton Precious Metals Corp. (WPM) Ex-Dividend Date Scheduled for November 29, 2018.NEWS10: Wheaton Precious Metals Corp. (WPM) Ex-Dividend Date Scheduled for November 29, 2018.NEWS11: Cameco Corporation (CCJ) Ex-Dividend Date Scheduled for November 29, 2018.NEWS12: Cameco Corporation (CCJ) Ex-Dividend Date Scheduled for November 29, 2018.NEWS13: Asian Shares Rise On Trade Talk Hopes.NEWS14: Asian Shares Rise On Trade Talk Hopes.

Answer: Decrease