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:2019-10-21, Stock:RIO, The news for the past five days is as follows:
2019-10-14: NEWS1: UPDATE 1-At least two dead in Guinea protests against change to constitution.NEWS2: European stocks slink back on warier view of U.S.-China, Brexit talks.NEWS3: Does Rio Tinto Group (LON:RIO) Have A Healthy Balance Sheet?.
2019-10-15: NEWS1: Rio Tinto sees rebound in Western Australia iron ore production.
2019-10-16: NEWS1: European shares tepid before Brexit talks resume.
2019-10-17: nan
2019-10-18: nan

Answer: Rise