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:2021-11-30, Stock:RIO, The news for the past five days is as follows:
2021-11-22: NEWS1: BHP Group (BHP) & Woodside Set to Finalize Petroleum Merger.
2021-11-23: nan
2021-11-24: nan
2021-11-26: NEWS1: Rio Tinto supports work to prevent domestic and family violence.NEWS2: Rio Tinto and the Botanic Gardens and Parks Authority celebrate 10 years of Rio Tinto Naturescape Kings Park.
2021-11-29: NEWS1: Why companies are ditching dual listings.

Answer: Decrease