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:2021-12-21, Stock:Unp, The news for the past five days is as follows:
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.
2021-12-17: NEWS1: FedEx reveals a stunning stat that shows the job market is really hot.NEWS2: Fidelity Contrafund Buys Shopify Inc, Snap Inc, ServiceNow Inc, Sells Mastercard Inc, Union ....
2021-12-20: NEWS1: Union Pacific (UNP) Stock Moves -0.84%: What You Should Know.

Answer: Rise