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:2018-06-19, Stock:RIO, The news for the past five days is as follows:
2018-06-12: NEWS1: Franco-Nevada Corporation (FNV) Ex-Dividend Date Scheduled for June 13, 2018.NEWS2: Franco-Nevada Corporation (FNV) Ex-Dividend Date Scheduled for June 13, 2018.NEWS3: Goldcorp Inc. (GG) Ex-Dividend Date Scheduled for June 13, 2018.NEWS4: Goldcorp Inc. (GG) Ex-Dividend Date Scheduled for June 13, 2018.NEWS5: Analysts’ Expectations for Rio Tinto’s Earnings.NEWS6: Why Analysts Are Becoming Bearish toward Rio Tinto.NEWS7: Rio Tinto hires CFO from Danish shipper Maersk.NEWS8: [$$] Rio Tinto turns to shipping industry for new CFO.NEWS9: Rio Names Stausholm as CFO to Complete Leadership Overhaul.NEWS10: Rio Tinto Names Jakob Stausholm as CFO, Succeeding Chris Lynch.NEWS11: [$$] Rio Tinto/resource cycle: easy rider.NEWS12: Vale (VALE) Might Stream $700M Voisey's Bay's Cobalt Output.NEWS13: Vale (VALE) Might Stream $700M Voisey's Bay's Cobalt Output.
2018-06-13: NEWS1: Mongolian ex-finance minister held over mining deal released -sources.
2018-06-14: NEWS1: See How Newmont Mining Corp Ranks Among Analysts' Top Metals Picks.NEWS2: See How Newmont Mining Corp Ranks Among Analysts' Top Metals Picks.
2018-06-15: nan
2018-06-18: NEWS1: BHP Board Approves South Flank Project to Replace Yandi.NEWS2: BHP Board Approves South Flank Project to Replace Yandi.

Answer: Decrease