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:2018-02-16, Stock:UNH, The news for the past five days is as follows:
2018-02-09: NEWS1: Ensign Group (ENSG) Beats on Q4 Earnings, Raises '18 View.NEWS2: Ensign Group (ENSG) Beats on Q4 Earnings, Raises '18 View.NEWS3: SPDR Dow Jones Industrial Average ETF Experiences Big Outflow.NEWS4: SPDR Dow Jones Industrial Average ETF Experiences Big Outflow.NEWS5: Ensign Group (ENSG) Beats on Q4 Earnings, Raises &apos;18 View.NEWS6: Validea Peter Lynch Strategy Daily Upgrade Report - 2/9/2018.NEWS7: Validea Peter Lynch Strategy Daily Upgrade Report - 2/9/2018.NEWS8: See what the IHS Markit Score report has to say about UnitedHealth Group Inc..
2018-02-12: NEWS1: 3 Healthcare Stocks to Buy After the Market's Beating.NEWS2: UnitedHealthcare Donates $25,000 to Support East Carolina University College of Nursing Scholarships.
2018-02-13: NEWS1: UnitedHealth Group Inc (UNH) Files 10-K for the Fiscal Year Ended on December 31, 2017.NEWS2: Molina Healthcare (MOH) Tops on Q4 Earnings, Issues '18 View.NEWS3: Molina Healthcare (MOH) Tops on Q4 Earnings, Issues '18 View.NEWS4: U.S. can sue UnitedHealth in $1 billion Medicare case, judge rules.NEWS5: U.S. can sue UnitedHealth in $1 bln Medicare case, judge rules.NEWS6: Fitbit Makes Acquisition to Enhance Health Care Service Offerings.
2018-02-14: NEWS1: Boeing and these other Dow stocks outperform when inflation is running hotter.NEWS2: UnitedHealth Group Board Authorizes Payment of Quarterly Dividend to Shareholders.
2018-02-15: NEWS1: Dow Logs Longest Win Streak of 2018.NEWS2: Dow Logs Longest Win Streak of 2018.NEWS3: Market Close Report: NASDAQ Composite index closes at 7,256.43 up 112.81 points.NEWS4: Market Close Report: NASDAQ Composite index closes at 7,256.43 up 112.81 points.NEWS5: Dow Movers: UNH, CSCO.NEWS6: Dow Movers: UNH, CSCO.NEWS7: UnitedHealth, Walgreens Partner To Put Urgent Care Next To Pharmacies.NEWS8: William McNabb Joins UnitedHealth Group Board of Directors.

Answer: Rise