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:2018-05-22, Stock:SBAC, The news for the past five days is as follows:
2018-05-15: NEWS1: How Wall Street Rates American Tower in 2Q18.
2018-05-16: nan
2018-05-17: nan
2018-05-18: NEWS1: SBA Communications Breaks Above 200-Day Moving Average - Bullish for SBAC.NEWS2: SBA Communications Breaks Above 200-Day Moving Average - Bullish for SBAC.
2018-05-21: nan

Answer: Decrease