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:2021-07-30, Stock:NGG, The news for the past five days is as follows:
2021-07-23: NEWS1: National Grid rocked by US scandal over contract bribes.
2021-07-26: nan
2021-07-27: NEWS1: Vaccine Volunteers Combating COVID in our Community.NEWS2: Sunnova, National Grid and SolarEdge Partner to Leverage DERs for New England’s Grid.
2021-07-28: nan
2021-07-29: nan

Answer: Decrease