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:2018-12-18, Stock:NGG, The news for the past five days is as follows:
2018-12-11: nan
2018-12-12: NEWS1: [$$] U.K. Electricity-Network Operator National Grid Names CFO.NEWS2: [$$] National Grid makes interim CFO permanent.
2018-12-13: NEWS1: Opus One Solutions closes Series B of Investment led by Renewal Funds.
2018-12-14: NEWS1: 8 Safe Stocks to Buy as Wall Street Goes Defensive.NEWS2: 8 Safe Stocks to Buy as Wall Street Goes Defensive.NEWS3: Have Insiders Been Buying National Grid plc (LON:NG.) Shares This Year?.
2018-12-17: NEWS1: Utilities: Movers and Shakers Last Week.

Answer: Decrease