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:2018-05-21, Stock:XEL, The news for the past five days is as follows:
2018-05-14: nan
2018-05-15: NEWS1: Xcel Energy’s Valuation, Analysts’ Views, and Target Price.
2018-05-16: NEWS1: Xcel Energy Inc. Board Declares Dividend on Common Stock.NEWS2: PPL Stock Offers Attractive Upside Potential.NEWS3: Xcel Energy Annual Shareholders Meeting At 12:00 PM ET.NEWS4: Xcel Energy Annual Shareholders Meeting At 12:00 PM ET.
2018-05-17: NEWS1: Xcel Energy’s Largest Institutional Investor Lowered Its Stake.
2018-05-18: nan

Answer: Decrease