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:2021-11-26, Stock:RIO, The news for the past five days is as follows:
2021-11-18: NEWS1: Rio Tinto Takes Full Control of Canada’s Biggest Diamond Mine.NEWS2: Rio Tinto becomes sole owner of Diavik Diamond Mine.
2021-11-19: NEWS1: As dual listings fall out of favour, Rio Tinto set to hold the line.
2021-11-22: NEWS1: BHP Group (BHP) & Woodside Set to Finalize Petroleum Merger.
2021-11-23: nan
2021-11-24: nan

Answer: Decrease