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:2019-10-08, Stock:Unp, The news for the past five days is as follows:
2019-10-01: nan
2019-10-02: NEWS1: 4 biggest U.S. railroad companies sued for alleged price-fixing.NEWS2: David Goodboy’s Palm Beach Hedge Fund Association Hosts Evening with Virgin Group.NEWS3: Mercedes-Benz USA sues four largest U.S. railroads for alleged price fixing.NEWS4: Union Pacific Picks New CFO as Rob Knight Plans Retirement.
2019-10-03: NEWS1: Can You Imagine How Union Pacific's (NYSE:UNP) Shareholders Feel About The 54% Share Price Increase?.NEWS2: Shippers Hammer Railroads With Lawsuits Over Fuel Surcharges.
2019-10-04: NEWS1: 5 Undervalued-Predictable Companies to Consider on Strong Job Growth.
2019-10-07: NEWS1: Norfolk Southern Up 20% in First 9 Months of 2019: Here's Why.

Answer: Decrease