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:2021-12-15, Stock:PSA, The news for the past five days is as follows:
2021-12-08: NEWS1: Hedge Funds Have Never Been This Bullish On Public Storage (PSA).
2021-12-09: nan
2021-12-10: NEWS1: Virtus AllianzGI Global Allocation Fund Buys Hannon Armstrong Sustainable Infrastructure ....NEWS2: NVIT AQR Large Cap Defensive Style Fund Buys Regeneron Pharmaceuticals Inc, Becton, Dickinson ....
2021-12-13: nan
2021-12-14: nan

Answer: Rise