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:2019-07-23, Stock:RIO, The news for the past five days is as follows:
2019-07-16: NEWS1: BHP Forecasts Iron Ore to Rebound After Annual Output Declines.NEWS2: Here's Why Turquoise Hill Resources Tumbled Today.NEWS3: Here's Why Turquoise Hill Resources Tumbled Today.NEWS4: Here&apos;s Why Turquoise Hill Resources Tumbled Today.NEWS5: AK Steel Declares Labor Agreement Ratification at Butler Works.NEWS6: AK Steel Declares Labor Agreement Ratification at Butler Works.NEWS7: AK Steel Declares Labor Agreement Ratification at Butler Works.NEWS8: Asian markets little changed as investors await earnings reports.NEWS9: Rio Tinto/Oyu Tolgoi: Mongolian mishaps.NEWS10: Rio Tinto warns of delay and cost blowout at Mongolia copper mine.NEWS11: Rio Tinto hits cost blowout at Mongolia copper expansion.
2019-07-17: NEWS1: Rio Tinto Falls After Posting 2nd-Quarter Production Results.
2019-07-18: NEWS1: Univar Starts Distribution Deal with Novozymes in Canada.NEWS2: Univar Starts Distribution Deal with Novozymes in Canada.NEWS3: Univar Starts Distribution Deal with Novozymes in Canada.
2019-07-19: NEWS1: Is WisdomTree International Hedged Quality Dividend Growth Fund (IHDG) a Strong ETF Right Now?.NEWS2: Is WisdomTree International Hedged Quality Dividend Growth Fund (IHDG) a Strong ETF Right Now?.NEWS3: Is WisdomTree International Hedged Quality Dividend Growth Fund (IHDG) a Strong ETF Right Now?.NEWS4: Alcoa's Q2 2019: Macroeconomic Headwinds And Restructuring Charges Weigh Heavily On Revenue And Bottom Line.NEWS5: Alcoa's Q2 2019: Macroeconomic Headwinds And Restructuring Charges Weigh Heavily On Revenue And Bottom Line.NEWS6: Rio Tinto under fire as Mongolia presses for mine deal changes.NEWS7: Nucor (NUE) Surpasses Q2 Earnings, Lags Revenue Estimates.NEWS8: Nucor (NUE) Surpasses Q2 Earnings, Lags Revenue Estimates.NEWS9: Nucor (NUE) Surpasses Q2 Earnings, Lags Revenue Estimates.
2019-07-22: NEWS1: Has Rio Tinto (RIO) Outpaced Other Basic Materials Stocks This Year?.NEWS2: RPT-COLUMN-Rio Tinto's Mongolia copper problems highlight frontier country risks: Russell.NEWS3: COLUMN-Rio Tinto's Mongolia copper problems highlight frontier country risks: Russell.

Answer: Decrease