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:2021-07-28, Stock:RIO, The news for the past five days is as follows:
2021-07-21: NEWS1: REFILE-Rio Tinto to shut furnace at South Africa mineral sands project.NEWS2: Richards Bay Minerals shuts furnace as engagement continues.NEWS3: Australia's iron ore miners face train driver shortage amid COVID lockdowns.NEWS4: Rio to Join New Study on Pacific Mine That Sparked Civil War.
2021-07-22: NEWS1: Rio Tinto progresses studies for potential underground mining at Kennecott copper.NEWS2: Canadian union Unifor gives Rio Tinto 72-hour strike notice.NEWS3: UPDATE 1-Canadian union Unifor gives Rio Tinto 72-hour strike notice.NEWS4: Canadian union Unifor gives Rio Tinto 72-hour strike notice.
2021-07-23: NEWS1: Vodafone and miners support FTSE 100, as investors sift through mixed data.NEWS2: Questor: Rio Tinto may be cleaning up its act but the iron ore boom is on borrowed time.
2021-07-26: NEWS1: UPDATE 1-Rio Tinto to cut output to 35% at Canadian smelter amid union strike.NEWS2: BC Works (Kitimat) smelter reduces production following strike.NEWS3: Rio Tinto signs groundbreaking renewable energy agreement in Madagascar.NEWS4: Record Profits and Blockbuster Payouts: Here Come the Miners.NEWS5: Rio Tinto Smelter Workers Strike Over Contracts in Canada.
2021-07-27: NEWS1: Rio Expands in Battery Metals With $2.4 Billion Lithium Mine.NEWS2: Rio Tinto commits funding for Jadar lithium project.NEWS3: RIO or BHP: Which Is the Better Value Stock Right Now?.

Answer: Rise