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:2020-09-21, Stock:NGG, The news for the past five days is as follows:
2020-09-14: nan
2020-09-15: NEWS1: How Many National Grid plc (LON:NG.) Shares Do Institutions Own?.
2020-09-16: nan
2020-09-17: nan
2020-09-18: NEWS1: Six Giant Tesla Batteries Keep British Lights on for First Time.

Answer: Decrease