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:2019-06-18, Stock:PSA, The news for the past five days is as follows:
2019-06-11: NEWS1: KeyBanc Upgrades 2 Storage Companies.NEWS2: See what the IHS Markit Score report has to say about Public Storage..
2019-06-12: nan
2019-06-13: NEWS1: See what the IHS Markit Score report has to say about Public Storage..
2019-06-14: nan
2019-06-17: NEWS1: Noteworthy ETF Inflows: RWR, PLD, PSA, WELL.NEWS2: Noteworthy ETF Inflows: RWR, PLD, PSA, WELL.

Answer: Decrease