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:2021-04-12, Stock:RIO, The news for the past five days is as follows:
2021-04-05: nan
2021-04-06: NEWS1: Has Rio Tinto (RIO) Outpaced Other Basic Materials Stocks This Year?.NEWS2: Upbeat US Data, Supply Concerns Prop Copper: 5 Stocks to Gain.
2021-04-07: NEWS1: Rio Tinto details $47 billion 2020 economic contribution, including $8.4 billion of taxes and royalties.NEWS2: FTSE 100 climbs as falling yields weigh on sterling.NEWS3: Rio Tinto achieves battery grade lithium production at Boron plant.NEWS4: Rio Tinto starts producing lithium from waste rock at California mine.
2021-04-08: NEWS1: Rio Tinto S. African Project in Limbo on Security Fear.NEWS2: Rio Tinto Exploration and Calibre Mining Initiate 2021 Exploration Program Including 5,500 Metre Drilling Campaign Prioritizing Prospective Near-Surface Copper and Copper-Gold Mineralization.
2021-04-09: NEWS1: Rio Tinto reaches agreement with Turquoise Hill Resources on financing plan for Oyu Tolgoi.NEWS2: UPDATE 4-Rio Tinto, Turquoise Hill reach deal on Oyu Tolgoi expansion.NEWS3: Rio Tinto reaches agreement with Turquoise Hill Resources on financing plan for Oyu Tolgoi.NEWS4: Top Rio Tinto investors vote against pay report after cave destruction.NEWS5: Ashley-owned Frasers warns of property write-offs.

Answer: Decrease