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:2018-05-23, Stock:NVO, The news for the past five days is as follows:
2018-05-16: nan
2018-05-17: nan
2018-05-18: NEWS1: Top Research Reports for Walmart, AT&T & Novo Nordisk.NEWS2: Top Research Reports for Walmart, AT&T & Novo Nordisk.NEWS3: Top Research Reports for Walmart, AT&T & Novo Nordisk.
2018-05-21: nan
2018-05-22: NEWS1: Report: Developing Opportunities within El Pollo Loco, Chemed, Novo Nordisk A/S, FactSet Research, Fair Isaac, and HCP — Future Expectations, Projections Moving into 2018.

Answer: Decrease