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:2018-12-13, Stock:Unp, The news for the past five days is as follows:
2018-12-06: NEWS1: Presidential funeral train will be first in nearly 50 years.NEWS2: Presidential funeral train will be first in nearly 50 years.
2018-12-07: NEWS1: Strong Intermodal Growth Drove CSX’s Total Traffic in Week 48.NEWS2: Bushes depart on first presidential funeral train since 1969.
2018-12-10: NEWS1: How Rail Traffic Trended for Canadian National in Week 48.NEWS2: Analysis: Positioning to Benefit within Newmark Group, Amphenol, First American Financial, Union Pacific, Campbell Soup, and Goldcorp — Research Highlights Growth, Revenue, and Consolidated Results.NEWS3: Canadian Pacific’s Carload Traffic Growth Was Highest among Peers.
2018-12-11: NEWS1: Weak Carload Performance Hurt Kansas City’s Rail Traffic Volume.NEWS2: Union Pacific a Top Socially Responsible Dividend Stock With 2.2% Yield (UNP).NEWS3: Union Pacific a Top Socially Responsible Dividend Stock With 2.2% Yield (UNP).NEWS4: BNSF Railway Has Worst Rail Traffic Performance among Peers.
2018-12-12: nan

Answer: Decrease