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:2018-12-24, Stock:BBL, The news for the past five days is as follows:
2018-12-17: NEWS1: Thai Stock Market Tipped To Give Up Support At 1,600 Points.NEWS2: Thai Stock Market Tipped To Give Up Support At 1,600 Points.
2018-12-18: NEWS1: Higher Open Predicted For Thai Stock Market.NEWS2: Higher Open Predicted For Thai Stock Market.
2018-12-19: NEWS1: Soft Start Called For Thai Stock Market.NEWS2: Soft Start Called For Thai Stock Market.
2018-12-20: NEWS1: Is BHP Billiton plc (BBL) Going to Burn These Hedge Funds?.
2018-12-21: nan

Answer: Decrease