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:2018-12-31, Stock:Unp, The news for the past five days is as follows:
2018-12-21: NEWS1: Relative Strength Alert For Union Pacific.NEWS2: Relative Strength Alert For Union Pacific.NEWS3: Union Pacific (UNP) Stock Moves -1.58%: What You Should Know.
2018-12-24: NEWS1: CSX’s Rail Traffic Growth Momentum Continues in Week 50.NEWS2: Canadian Pacific Was Top Volume Gainer.NEWS3: US Rail Freight Traffic Growth Trend Continues in Week 50.
2018-12-26: NEWS1: Canadian Pacific Railway Limited (CP) Ex-Dividend Date Scheduled for December 27, 2018.NEWS2: Canadian Pacific Railway Limited (CP) Ex-Dividend Date Scheduled for December 27, 2018.NEWS3: Kansas City’s Rail Traffic Was the Lowest among Peers.
2018-12-27: NEWS1: Will CSX and Union Pacific Continue to Outperform in 2019?.NEWS2: Will CSX and Union Pacific Continue to Outperform in 2019?.NEWS3: Will CSX and Union Pacific Continue to Outperform in 2019?.NEWS4: Kansas City Southern (KSU) Ex-Dividend Date Scheduled for December 28, 2018.NEWS5: Kansas City Southern (KSU) Ex-Dividend Date Scheduled for December 28, 2018.NEWS6: FedEx and UPS Shares Rose on December 26.
2018-12-28: NEWS1: Interesting UNP Put And Call Options For August 2019.NEWS2: Interesting UNP Put And Call Options For August 2019.

Answer: Rise