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:2018-07-26, Stock:RDS-B, The news for the past five days is as follows:
2018-07-19: nan
2018-07-20: NEWS1: Market Chatter: Shell in Negotiations to Sell Nigerian Oil Licenses for $2 Bln.NEWS2: Market Chatter: Shell in Negotiations to Sell Nigerian Oil Licenses for $2 Bln.
2018-07-23: NEWS1: Shell Secures Exploration Acreage Offshore Mauritania.NEWS2: Shell Secures Exploration Acreage Offshore Mauritania.NEWS3: Market Chatter: Royal Dutch Shell Said to be Likely to Announce Share Buy-Back Program.NEWS4: Market Chatter: Royal Dutch Shell Said to be Likely to Announce Share Buy-Back Program.
2018-07-24: nan
2018-07-25: nan

Answer: Decrease