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:2018-04-23, Stock:NVO, The news for the past five days is as follows:
2018-04-16: nan
2018-04-17: NEWS1: Novartis’s Innovative Medicines Segment in 1Q18.
2018-04-18: NEWS1: Xultophy® approved in Canada for the treatment of adults with type 2 diabetes.NEWS2: Analysts’ Recommendations for Novartis on April 17.NEWS3: Novartis’s 1Q18 Estimates: Expectations for Alcon.
2018-04-19: nan
2018-04-20: nan

Answer: Decrease