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:2018-02-21, Stock:SBAC, The news for the past five days is as follows:
2018-02-13: NEWS1: SBA Tower Trust -- Moody's assigns provisional ratings to SBA Communications wireless tower-backed securities.NEWS2: SBA Tower Trust -- Moody's assigns provisional ratings to SBA Communications wireless tower-backed securities.
2018-02-14: nan
2018-02-15: nan
2018-02-16: NEWS1: SBA Communications Hits 80-Plus Relative Strength Rating Benchmark.NEWS2: SBA Communications Hits 80-Plus Relative Strength Rating Benchmark.NEWS3: Recent Analysis Shows SBA Communications, AMAG Pharmaceuticals, Galectin Therapeutics, Xilinx, J.B. Hunt Transport Services, and Southern Market Influences — Renewed Outlook, Key Drivers of Growth.
2018-02-20: NEWS1: SBA Communications Corporation to Speak at the 2018 Deutsche Bank Media & Telecom Conference.NEWS2: What's in the Cards for Windstream (WIN) in Q4 Earnings?.NEWS3: What's in the Cards for Windstream (WIN) in Q4 Earnings?.

Answer: Decrease