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:2021-12-17, Stock:Unp, The news for the past five days is as follows:
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
2021-12-15: NEWS1: VIP Contrafund Portfolio Buys Moderna Inc, Marvell Technology Inc, LyondellBasell Industries ....
2021-12-16: NEWS1: Fidelity Magellan Fund Buys Roper Technologies Inc, Teledyne Technologies Inc, Equinix Inc, ....NEWS2: Union Pacific Corporation Announces Fourth Quarter 2021 Earnings Release Date.

Answer: Decrease