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:2018-06-19, Stock:RDS-B, The news for the past five days is as follows:
2018-06-12: NEWS1: Rio Tinto Names Jakob Stausholm CFO, Succeeding Chris Lynch, Effective Sept. 3.NEWS2: Rio Tinto Names Jakob Stausholm CFO, Succeeding Chris Lynch, Effective Sept. 3.
2018-06-13: NEWS1: Market Chatter: Royal Dutch Shell's Appeal to Reverse Nigeria Graft Trial to Preliminary Stage Deemed Inadmissible.NEWS2: Market Chatter: Royal Dutch Shell's Appeal to Reverse Nigeria Graft Trial to Preliminary Stage Deemed Inadmissible.
2018-06-14: nan
2018-06-15: nan
2018-06-18: nan

Answer: Decrease