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:2019-11-22, Stock:RIO, The news for the past five days is as follows:
2019-11-15: nan
2019-11-18: NEWS1: Mining trade group voices concerns on proposed tailings dam standards.
2019-11-19: NEWS1: Rio Tinto’s Giant Mongolia Project Dealt Another Blow.NEWS2: Rio Tinto says Mongolian mine agreements are legal.
2019-11-20: NEWS1: A Trio of Mining Favorites- Copper, Gold and Iron Ore.
2019-11-21: NEWS1: Rio Tinto faces having to renegotiate terms of Mongolian copper project.NEWS2: Mongolia parliament seeks ‘improved contracts’ for Rio Tinto mine.

Answer: Rise