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:2019-03-20, Stock:UNH, The news for the past five days is as follows:
2019-03-13: NEWS1: Dow Holds Gains Despite Boeing Turbulence.NEWS2: Dow Holds Gains Despite Boeing Turbulence.NEWS3: NASDAQ Composite Index closes up 32.97 points for the week, rising for the 3rd straight day.NEWS4: NASDAQ Composite Index closes up 32.97 points for the week, rising for the 3rd straight day.NEWS5: House panel probes Anthem, UnitedHealth over short-term health plans.NEWS6: Owens & Minor, Inc. (OMI) Ex-Dividend Date Scheduled for March 14, 2019.NEWS7: Owens & Minor, Inc. (OMI) Ex-Dividend Date Scheduled for March 14, 2019.NEWS8: UnitedHealth Pivots Before Trump Forces the Issue.NEWS9: PRESS DIGEST- New York Times business news - March 13.NEWS10: UnitedHealth to Require Drug Rebates Go to Consumers.
2019-03-14: NEWS1: UnitedHealth Group (UNH) Gains As Market Dips: What You Should Know.NEWS2: Stock Market News For Mar 14, 2019.NEWS3: Stock Market News For Mar 14, 2019.NEWS4: Dow Movers: WMT, UNH.NEWS5: Dow Movers: WMT, UNH.NEWS6: 4 HMO Q4 Outperformers Likely to Retain Beat Streak in Q1.NEWS7: 4 HMO Q4 Outperformers Likely to Retain Beat Streak in Q1.NEWS8: Stock Market News For Mar 14, 2019.NEWS9: Anthem, Inc. (ANTM) Ex-Dividend Date Scheduled for March 15, 2019.NEWS10: Anthem, Inc. (ANTM) Ex-Dividend Date Scheduled for March 15, 2019.NEWS11: 4 HMO Q4 Outperformers Likely to Retain Beat Streak in Q1.
2019-03-15: NEWS1: Why is it Worth Keeping Humana (HUM) in Your Portfolio Now?.NEWS2: Why is it Worth Keeping Humana (HUM) in Your Portfolio Now?.NEWS3: IWV, UNH, ABBV, HON: Large Inflows Detected at ETF.NEWS4: IWV, UNH, ABBV, HON: Large Inflows Detected at ETF.NEWS5: Why is it Worth Keeping Humana (HUM) in Your Portfolio Now?.NEWS6: UnitedHealth Group (UNH) Gains As Market Dips: What You Should Know.NEWS7: UnitedHealth Group (UNH) Gains As Market Dips: What You Should Know.
2019-03-18: NEWS1: HCA Healthcare to Buy Large Stake in Galen College of Nursing.NEWS2: HCA Healthcare to Buy Large Stake in Galen College of Nursing.NEWS3: Ohio accuses UnitedHealth's OptumRx of drug overcharges in lawsuit.NEWS4: UnitedHealth Shares Finding Their Mojo Again.NEWS5: Humana, Accolade to Team Up for Providing Advanced Healthcare.NEWS6: Humana, Accolade to Team Up for Providing Advanced Healthcare.NEWS7: HCA Healthcare to Buy Large Stake in Galen College of Nursing.NEWS8: Humana, Accolade to Team Up for Providing Advanced Healthcare.NEWS9: Warren Buffett describes Haven's plan to improve health care while controlling costs.
2019-03-19: nan

Answer: Decrease