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:2019-04-30, Stock:RIO, The news for the past five days is as follows:
2019-04-23: NEWS1: Iron Ore Prices Could Be Supported after Vale’s Mine Restart.NEWS2: Vale: No Production Upgrade despite Authorization to Reopen Mine.
2019-04-24: NEWS1: Cleveland Cliffs: Realized Price Expectations in 2019.
2019-04-25: NEWS1: Cleveland-Cliffs’ Upside: Vale’s Dam Burst and Supply Disruptions.
2019-04-26: NEWS1: Mesabi Trust (MSB) Ex-Dividend Date Scheduled for April 29, 2019.NEWS2: Mesabi Trust (MSB) Ex-Dividend Date Scheduled for April 29, 2019.
2019-04-29: NEWS1: Freeport-McMoRan: What to Expect after Last Week’s Sell-Off.

Answer: Decrease