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:2019-01-02, Stock:UNH, The news for the past five days is as follows:
2018-12-24: NEWS1: 5 Worst Performing Stocks of Dow ETF Last Week.NEWS2: 5 Worst Performing Stocks of Dow ETF Last Week.NEWS3: 5 Worst Performing Stocks of Dow ETF Last Week.NEWS4: We Did The Math XRLV Can Go To $38.NEWS5: We Did The Math XRLV Can Go To $38.
2018-12-26: NEWS1: UnitedHealth Rises 3%.
2018-12-27: NEWS1: UnitedHealth Falls 3%.
2018-12-28: NEWS1: UnitedHealth Group (UNH) Gains As Market Dips: What You Should Know.NEWS2: Buy UnitedHealth ahead of earnings? Does Caterpillar look....NEWS3: IVV, PFE, UNH, MRK: ETF Inflow Alert.NEWS4: IVV, PFE, UNH, MRK: ETF Inflow Alert.
2018-12-31: NEWS1: Best Stocks and Sectors to Start 2019.NEWS2: Here are the health care stocks to watch in 2019.

Answer: Decrease