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:2018-03-15, Stock:UNH, The news for the past five days is as follows:
2018-03-08: NEWS1: Cigna Deal Shows Being a Health Insurer Isn't Enough Anymore.NEWS2: Healthcare Stocks Trade Mixed on Cigna's Massive $67 Billion Express Scripts Bid.NEWS3: Cigna Buys Express Scripts Even As Pharmacy Benefit Managers Come Under Fire.NEWS4: See who is interested in buying a publicly traded Nashville health care giant.NEWS5: OptumRx Supports Kansans in Need Through Medication Donations Now Totaling More Than $20 Million.NEWS6: Vanguard Value ETF Experiences Big Inflow.NEWS7: Vanguard Value ETF Experiences Big Inflow.NEWS8: Dow Movers: UNH, MSFT.NEWS9: Dow Movers: UNH, MSFT.NEWS10: Cigna’s $54 Billion Buy Seen as ‘Best Case’ for Drug Middleman.NEWS11: Cigna-Express Scripts Deal Leaves Rivals in the Lurch.NEWS12: Cigna Corporation (CI) Ex-Dividend Date Scheduled for March 09, 2018.NEWS13: Cigna Corporation (CI) Ex-Dividend Date Scheduled for March 09, 2018.NEWS14: See what the IHS Markit Score report has to say about UnitedHealth Group Inc..NEWS15: [$$] FDA Puts Drug Supply Chain on Notice.NEWS16: Insurer offers free Apple Watches in program that had focused on Fitbit.NEWS17: Insurer offers free Apple Watches in program that had focused on Fitbit.
2018-03-09: NEWS1: Dow Movers: VZ, CAT.NEWS2: Dow Movers: VZ, CAT.NEWS3: Analysts Predict 11% Upside For IVV.NEWS4: Analysts Predict 11% Upside For IVV.NEWS5: Study: Digital Tools Help Children and Teens Better Manage Type 1 Diabetes.NEWS6: Cigna Deal Shows Being a Health Insurer Isn’t Enough Anymore.NEWS7: How Science Has Undermined the Women of Science.
2018-03-12: NEWS1: Could Cigna–Express Scripts Deal Be Earnings Accretive in Year 1?.NEWS2: Cigna Expects Acquisition of Express Scripts by End of 2018.NEWS3: Financial stocks are looking better to main street investors: NYSE trader.NEWS4: 5 Reasons Why Anthem (ANTM) is a Lucrative Investment Option.NEWS5: 5 Reasons Why Anthem (ANTM) is a Lucrative Investment Option.NEWS6: 5 Reasons Why Anthem (ANTM) is a Lucrative Investment Option.NEWS7: Big Health-Care Players Are Turning Their Partners Into Prey.NEWS8: Insurers Game Medicare System to Boost Federal Bonus Payments.
2018-03-13: NEWS1: Nasdaq Streak Snapped on Tech Pullback, White House Turnover.NEWS2: Nasdaq Streak Snapped on Tech Pullback, White House Turnover.NEWS3: Market Close Report: NASDAQ Composite index closes at 7,511.01 down -77.31 points.NEWS4: Market Close Report: NASDAQ Composite index closes at 7,511.01 down -77.31 points.NEWS5: Techs Slide As Dow, S&P 500 Meet Resistance; Homebuilder Surges.NEWS6: [$$] UnitedHealth Names Head of Expanded Venture-Capital Efforts.NEWS7: Buy These 3 Stocks as Healthcare Continues to Shift Gears.NEWS8: Buy These 3 Stocks as Healthcare Continues to Shift Gears.NEWS9: Ex-GlaxoSmithKline CEO to lead UnitedHealth's Optum.NEWS10: Buy These 3 Stocks as Healthcare Continues to Shift Gears.NEWS11: Owens & Minor, Inc. (OMI) Ex-Dividend Date Scheduled for March 14, 2018.NEWS12: Owens & Minor, Inc. (OMI) Ex-Dividend Date Scheduled for March 14, 2018.NEWS13: UnitedHealth names former GSK CEO Andrew Witty as Optum head.NEWS14: UnitedHealth names former GSK CEO Andrew Witty as Optum head.NEWS15: See what the IHS Markit Score report has to say about UnitedHealth Group Inc..NEWS16: UnitedHealth Group Announces Leadership Actions.NEWS17: Cigna Expects to Report Robust Revenue Growth in the Future.NEWS18: UnitedHealth Group Names Andrew Witty As Optum CEO, Succeeding Renfro.NEWS19: UnitedHealth Group Names Andrew Witty As Optum CEO, Succeeding Renfro.NEWS20: [$$] Former GSK chief Andrew Witty to lead UnitedHealth’s Optum unit.
2018-03-14: NEWS1: Health Care Sector Update for 03/14/2018: HLTH,EVHC,SUPN,SBPH.NEWS2: Health Care Sector Update for 03/14/2018: HLTH,EVHC,SUPN,SBPH.NEWS3: Dow Stocks Drop As Boeing, Apple Weigh; Bitcoin Dives To 1-Mo. Low.NEWS4: Health Care Sector Update for 03/14/2018: EVHC, UNH, SUPN, SBPH.NEWS5: Health Care Sector Update for 03/14/2018: EVHC, UNH, SUPN, SBPH.NEWS6: Envision falls on United Healthcare reports.NEWS7: Cigna on Raters' Radar After Express Scripts Bid, Stock Down.NEWS8: Cigna on Raters' Radar After Express Scripts Bid, Stock Down.NEWS9: Why Techs, Banks May Outperform In a Trade War.NEWS10: UnitedHealth Drops Out of Envision Sales Process.NEWS11: Cigna on Raters&apos; Radar After Express Scripts Bid, Stock Down.

Answer: Rise