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:2019-02-06, Stock:PSA, The news for the past five days is as follows:
2019-01-30: NEWS1: Validea James P. O'Shaughnessy Strategy Daily Upgrade Report - 1/30/2019.NEWS2: Validea James P. O'Shaughnessy Strategy Daily Upgrade Report - 1/30/2019.
2019-01-31: nan
2019-02-01: NEWS1: Public Storage's Preferred Stock, Series X Shares Cross 5.5% Yield Mark.NEWS2: Public Storage's Preferred Stock, Series X Shares Cross 5.5% Yield Mark.
2019-02-04: nan
2019-02-05: nan

Answer: Decrease