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:2019-04-15, Stock:RIO, The news for the past five days is as follows:
2019-04-08: NEWS1: The 5 Most Promising Gold Stocks Of 2019.NEWS2: EXCLUSIVE: Fire At The Port Of Dampier Damages Iron Ore Screen-Houses.NEWS3: Cyclone Wallace Spares Port Walcott But Iron Ore Exports Disrupted.NEWS4: Brexit, oil prices nudge London markets lower.NEWS5: Rio Tinto signs off on $500m South Africa project.
2019-04-09: NEWS1: Rio Tinto says fire damages Pilbara iron ore operation.NEWS2: CRU-CESCO-Rio Tinto to join World Bank's green mining program.NEWS3: CRU-CESCO-Antofagasta to stay put on dividend policy but will return cash to shareholders.NEWS4: Alternative Investments to Add to Your Portfolio in the 2nd Quarter.NEWS5: EXCLUSIVE: Rio Tinto Admits To Fire Damage At Dampier.NEWS6: CRU-CESCO-Rio Tinto to join World Bank's green mining program.NEWS7: Mongolia mining minister rules out Oyu Tolgoi deal changes.
2019-04-10: NEWS1: Could Chinese Port Inventories Decline amid Supply Tightness.NEWS2: Iron Ore Prices Rally as Miners Cut Their Shipment Estimates.NEWS3: Is the Party Just Getting Started for Iron Ore Miners?.NEWS4: CRU-CESCO-From turbines to thermostats: Copper miners eyes high-tech demand.NEWS5: New Strong Buy Stocks for April 10th.NEWS6: New Strong Buy Stocks for April 10th.NEWS7: Univar to Distribute Plant-Based Products of Axiom Foods.NEWS8: Univar to Distribute Plant-Based Products of Axiom Foods.NEWS9: New Strong Buy Stocks for April 10th.NEWS10: Caledonia Mining Corporation Plc (CMCL) Ex-Dividend Date Scheduled for April 11, 2019.NEWS11: Caledonia Mining Corporation Plc (CMCL) Ex-Dividend Date Scheduled for April 11, 2019.NEWS12: Univar to Distribute Plant-Based Products of Axiom Foods.NEWS13: Rio faces rebellion from biggest shareholder.
2019-04-11: NEWS1: Ashland to Hike Price of Composites Products in North America.NEWS2: Ashland to Hike Price of Composites Products in North America.NEWS3: Allegheny (ATI) Extends Purchase Agreement With Rolls-Royce.NEWS4: Allegheny (ATI) Extends Purchase Agreement With Rolls-Royce.NEWS5: Allegheny (ATI) Extends Purchase Agreement With Rolls-Royce.NEWS6: Ashland to Hike Price of Composites Products in North America.NEWS7: Buenaventura Mining Company Inc. (BVN) Ex-Dividend Date Scheduled for April 12, 2019.NEWS8: Buenaventura Mining Company Inc. (BVN) Ex-Dividend Date Scheduled for April 12, 2019.NEWS9: Why Is Barclays Optimistic on the Iron Ore Price Outlook?.NEWS10: Credit Suisse Is Expecting a Push in Iron Ore Prices on Supply Deficit.
2019-04-12: NEWS1: Newmont's (NEM) Shareholders Clear Goldcorp Transaction.NEWS2: Newmont's (NEM) Shareholders Clear Goldcorp Transaction.NEWS3: Newmont's (NEM) Shareholders Clear Goldcorp Transaction.

Answer: Decrease