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:2021-07-21, Stock:RIO, The news for the past five days is as follows:
2021-07-14: nan
2021-07-15: NEWS1: Bad weather hits Rio Tinto's qtrly iron ore exports ahead of results bonanza.NEWS2: Rio Tinto releases second quarter production results.
2021-07-16: NEWS1: Burberry, Rio Tinto and AstraZeneca keep a lid on London stock gains.NEWS2: Rio Tinto (RIO) Q2 Iron Ore Shipments & Production Down Y/Y.NEWS3: Rio Tinto's Sideways Pattern Shouldn't Last Too Long.
2021-07-19: NEWS1: Vale Output Disappoints in Fresh Blow to Tight Iron Market.NEWS2: Newmont (NEM) Approves Ahafo North Project, Boosts Portfolio.
2021-07-20: NEWS1: Rio Tinto and Bougainville community residents reach agreement to assess legacy impacts of Panguna mine.NEWS2: U.S. Silica (SLCA) Lifts Prices for Industrial & Specialty Products.NEWS3: BHP Reports 2% Rise in Iron Ore Production in Fiscal 2021.NEWS4: Vale's (VALE) Q2 Iron Ore Production Improves 12% Y/Y.

Answer: Rise