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:2018-05-08, Stock:RIO, The news for the past five days is as follows:
2018-05-01: NEWS1: Rio Tinto Chairman Denies Bribery Claims; Says Vigorously Defend In Court.NEWS2: Rio Tinto Chairman Denies Bribery Claims; Says Vigorously Defend In Court.NEWS3: Could China’s Iron Ore Imports Level Off Soon?.NEWS4: [$$] Australian corporate watchdog takes further legal action against Rio Tinto.NEWS5: Iron Ore Inventories Ease Slightly But Not Enough to Support Prices.NEWS6: Which Country Has the Most Gold Reserves?.NEWS7: Which Country Has the Most Gold Reserves?.NEWS8: Which Country Has the Most Gold Reserves?.NEWS9: Australia corporate watchdog expands legal action against Rio Tinto, former executives.NEWS10: ASIC Takes Further Action Against Rio Tinto, Its Former CEO, CFO Related To Unit.NEWS11: ASIC Takes Further Action Against Rio Tinto, Its Former CEO, CFO Related To Unit.
2018-05-02: NEWS1: U.S. sanctions extension may ease Rusal restrictions - Rio Tinto CEO.NEWS2: [$$] Australia Broadens Legal Action Against Mining Titan Rio Tinto.
2018-05-03: nan
2018-05-04: NEWS1: Freeport-McMoRan: Analyzing the Grasberg Concerns.NEWS2: How Aluminum Producers’ Earnings Look in Light of Tariffs.NEWS3: President Trump Is the New Wild Card for the Aluminum Industry.NEWS4: BLOG: The Permian Can Help Satisfy China&apos;s LNG Appetite.
2018-05-07: NEWS1: Southern Copper Corporation (SCCO) Ex-Dividend Date Scheduled for May 08, 2018.NEWS2: Southern Copper Corporation (SCCO) Ex-Dividend Date Scheduled for May 08, 2018.NEWS3: 5 Reasons to Consider Freeport-McMoRan.NEWS4: Grasberg Impacts Freeport-McMoRan’s Valuation.

Answer: Decrease