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:2018-04-18, Stock:RIO, The news for the past five days is as follows:
2018-04-11: NEWS1: Rio Tinto defends executive bonus structure.NEWS2: Is Rio Tinto Partners a Great Stock for Value Investors?.NEWS3: Is Rio Tinto Partners a Great Stock for Value Investors?.NEWS4: Could Copper Markets Reach a Surplus in 2018?.NEWS5: Rio Tinto under fire from shareholders over pay and climate change.NEWS6: Is Rio Tinto Partners a Great Stock for Value Investors?.NEWS7: Caledonia Mining Corporation Plc (CMCL) Ex-Dividend Date Scheduled for April 12, 2018.NEWS8: Caledonia Mining Corporation Plc (CMCL) Ex-Dividend Date Scheduled for April 12, 2018.NEWS9: Should Vale’s Valuation Be Re-Rated?.NEWS10: [$$] Rio Tinto reviewing all relationships with Rusal.NEWS11: [$$] Mongolia arrests 2 former PMs linked to mining probe.NEWS12: Mongolia anti-graft agency arrests two prime ministers amid mine probe.NEWS13: Rio Tinto Issues AGM Statement - Quick Facts.NEWS14: Rio Tinto Issues AGM Statement - Quick Facts.NEWS15: [$$] Rio Tinto defends executive pay policies, lobby group membership.
2018-04-12: NEWS1: Uncertainties Surround Freeport’s Indonesia Operations.NEWS2: Alamos Gold Inc. (AGI) Ex-Dividend Date Scheduled for April 13, 2018.NEWS3: Alamos Gold Inc. (AGI) Ex-Dividend Date Scheduled for April 13, 2018.NEWS4: US-China Trade War and Copper: Is there a Connection?.
2018-04-13: NEWS1: Rio to call force majeure on some Rusal-linked contracts.NEWS2: UPDATE 1-Rio to call force majeure on some Rusal-linked contracts.NEWS3: Can China Step In after US Sanctions on Russia?.NEWS4: [$$] Rio triggers force majeure on Irish Rusal contract.NEWS5: [$$] Rio Tinto declares force majeure on Rusal deals.
2018-04-16: NEWS1: What Updates Can Investors Expect from Alcoa’s Earnings Release?.NEWS2: What Could Drive Alcoa’s 1Q18 Financial Performance?.NEWS3: What Wall Street Expects from Alcoa’s 1Q18 Earnings.NEWS4: Why the Closure of CLF’s Australian Operations Could Be Positive.NEWS5: Why Cliffs’ Asia-Pacific Segment Could Disappoint Again in 1Q18.NEWS6: [$$] Rusal tumbles 21% as US vows to impose further sanctions on Russia.
2018-04-17: NEWS1: Rio Tinto first-quarter shipments rise 4.7 percent, maintains forecast.NEWS2: Rio Tinto Q1 Iron Ore Shipments Up 5%; Backs FY Iron Ore Shipments Outlook.NEWS3: Rio Tinto Q1 Iron Ore Shipments Up 5%; Backs FY Iron Ore Shipments Outlook.NEWS4: Sanctions batter Rusal's overseas supply chain, restructuring seen.NEWS5: Analysis: Sanctions batter Rusal's overseas supply chain, restructuring seen.NEWS6: Pre-Market Most Active for Apr 17, 2018 :  NFLX, TVIX, SQQQ, QQQ, GS, RIO, TWTR, BAC, BABA, CHK, GERN, ROKU.NEWS7: Pre-Market Most Active for Apr 17, 2018 :  NFLX, TVIX, SQQQ, QQQ, GS, RIO, TWTR, BAC, BABA, CHK, GERN, ROKU.NEWS8: How Wall Street Rates Alcoa ahead of Its 1Q18 Earnings Release.NEWS9: Russia Sanctions Throw Global Aluminum Industry Into Chaos.

Answer: Rise