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:2021-05-19, Stock:SO, The news for the past five days is as follows:
2021-05-12: NEWS1: ‘Arm Waving’ Response to Hackers Makes Oil Industry Easy Prey.NEWS2: Southern Company earns top 20 national ranking of Companies for Diversity by DiversityInc, rising six spots from last year and marking six consecutive years of recognition.
2021-05-13: nan
2021-05-14: nan
2021-05-17: nan
2021-05-18: nan

Answer: Decrease