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:2021-12-15, Stock:Unp, The news for the past five days is as follows:
2021-12-08: NEWS1: Supply chains: The Omicron variant is a ‘key uncertainty going into 2022,’ economist says.NEWS2: Union Pacific Corp (UNP) EVP & CHIEF HR OFFICER Elizabeth F Whited Sold $614,950 of Shares.
2021-12-09: NEWS1: UPDATE 1-Union Pacific, BNSF pause COVID-19 vaccine mandate after court ruling.NEWS2: Union Pacific suspends COVID-19 vaccine mandate after court ruling.
2021-12-10: NEWS1: Union Pacific Corporation Announces 10% Dividend Increase for Fourth Quarter 2021.NEWS2: Union Pacific Announces Appointment of Michael Miller as Treasurer, Retirement of Gary Grosz.NEWS3: NVIT BNY Mellon Dynamic U.S. Equity Income Fund Buys Willis Towers Watson PLC, UnitedHealth ....
2021-12-13: NEWS1: Union Pacific (UNP) Dips More Than Broader Markets: What You Should Know.NEWS2: Transports on Dividend-Hiking Spree: 3 Stocks to Watch out for.NEWS3: Deutsche Dws Variable Series I Buys Hilton Worldwide Holdings Inc, Apollo Global Management ....NEWS4: T. Rowe Price Exchange-Traded Funds, Inc. Buys Microsoft Corp, Amazon. ....NEWS5: Union Pacific: The Dividend Increase Is a Good Sign.NEWS6: Union Pacific (UNP) Cheers Investors With 10% Dividend Hike.
2021-12-14: nan

Answer: Rise