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:2019-11-11, Stock:RIO, The news for the past five days is as follows:
2019-11-04: NEWS1: U.K. stocks boom on hopes for China trade deal.
2019-11-05: NEWS1: The 5 Most Promising Gold Companies For 2020.
2019-11-06: NEWS1: Depressed aluminium market tells a sorry tale of global demand.
2019-11-07: nan
2019-11-08: NEWS1: London stocks slip as commodity-related stocks, banks weigh.

Answer: Decrease