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:2018-09-17, Stock:UNH, The news for the past five days is as follows:
2018-09-10: NEWS1: Unitedhealth Group Inc (UNH) EVP & CEO, UnitedHealthcare Steven H Nelson Sold $7 million of ....NEWS2: Nasdaq, S&P End Higher for the First Day in Five.NEWS3: Nasdaq, S&P End Higher for the First Day in Five.NEWS4: UnitedHealth Falls 3.02%.NEWS5: Market Close Report: NASDAQ Composite index closes at 7,924.16 up 21.62 points.NEWS6: Market Close Report: NASDAQ Composite index closes at 7,924.16 up 21.62 points.NEWS7: US STOCKS-S&P, Nasdaq edge higher after recent losses but Apple drags.NEWS8: Analyst Favorites With Strong Buyback Activity: Voya Financial Inc Ranks As a Top Pick.NEWS9: Analyst Favorites With Strong Buyback Activity: Voya Financial Inc Ranks As a Top Pick.NEWS10: Mid-Day Update: Stocks Regain Upward Momentum as Bargain-Hunting, Tax Cuts Fuels Gains.NEWS11: Mid-Day Update: Stocks Regain Upward Momentum as Bargain-Hunting, Tax Cuts Fuels Gains.NEWS12: Is UnitedHealth Group Incorporated’s (NYSE:UNH) Balance Sheet Strong Enough To Weather A Storm?.NEWS13: Dow Movers: TRV, NKE.NEWS14: Dow Movers: TRV, NKE.NEWS15: Seventh Annual National Medicare Education Week, Sept. 15-21, Empowers People with Information and Resources before Annual Enrollment Period.
2018-09-11: NEWS1: Woman's Hospital and United Health Foundation Launch Program to Help Expectant Mothers with Opioid Use Disorder.NEWS2: Woman’s Hospital and United Health Foundation Launch Program to Help Expectant Mothers with Opioid Use Disorder.NEWS3: Implied OEW Analyst Target Price: $38.NEWS4: Implied OEW Analyst Target Price: $38.
2018-09-12: NEWS1: CORRECTING and REPLACING Woman's Hospital and United Health Foundation Launch Program to Help Expectant Mothers with Opioid Use Disorder.NEWS2: Dow Within Striking Distance of Record High Level: 4 Picks.NEWS3: Dow Within Striking Distance of Record High Level: 4 Picks.NEWS4: Dow Within Striking Distance of Record High Level: 4 Picks.
2018-09-13: NEWS1: UnitedHealth Group Named to Dow Jones Sustainability North America and World Indices for 20th Consecutive Year.NEWS2: Notable Thursday Option Activity: REGN, UNH, FIS.NEWS3: Notable Thursday Option Activity: REGN, UNH, FIS.NEWS4: Owens & Minor, Inc. (OMI) Ex-Dividend Date Scheduled for September 14, 2018.NEWS5: Owens & Minor, Inc. (OMI) Ex-Dividend Date Scheduled for September 14, 2018.
2018-09-14: NEWS1: Once Again, Baird Predicts End To Tandem's 'Fantastic' Run.NEWS2: See what the IHS Markit Score report has to say about UnitedHealth Group Inc..NEWS3: Is UnitedHealth Group Incorporated (NYSE:UNH) Attractive At This PE Ratio?.

Answer: Decrease