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:2020-02-19, Stock:RIO, The news for the past five days is as follows:
2020-02-11: nan
2020-02-12: NEWS1: Iron Ore’s Brazilian Rain Dance Looks Premature.NEWS2: Rio weighs closure of Icelandic smelter as it struggles with power costs.NEWS3: Rio Tinto to review future of ISAL smelter.
2020-02-13: nan
2020-02-14: NEWS1: EU launches anti-dumping investigation on China aluminium products.
2020-02-18: NEWS1: Chinese copper smelting activity slips in January - satellite index.NEWS2: BHP Can Afford to Go a Lot Greener.

Answer: Decrease