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:2019-04-18, Stock:NVO, The news for the past five days is as follows:
2019-04-11: NEWS1: Pre-Market Most Active for Apr 11, 2019 :  FRSH, LYG, ERIC, BBBY, TSLA, NVO, CZR, NOK, SAN, TVIX, ET, AU.NEWS2: Pre-Market Most Active for Apr 11, 2019 :  FRSH, LYG, ERIC, BBBY, TSLA, NVO, CZR, NOK, SAN, TVIX, ET, AU.
2019-04-12: NEWS1: Gilead Sciences Teams With Novo Nordisk for Trials of Liver Disease Drugs.NEWS2: Novo Nordisk and Gilead team up to test fatty liver disease treatment.
2019-04-15: NEWS1: Gilead to Collaborate with Novo Nordisk for NASH Treatment.
2019-04-16: nan
2019-04-17: NEWS1: Gilead Collaborates With Insitro to Develop NASH Therapies.NEWS2: Biotech Stock Roundup: GILD Collaborates on NASH, FCSC Surges on Deal.NEWS3: Biotech Stock Roundup: GILD Collaborates on NASH, FCSC Surges on Deal.

Answer: Decrease