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:2018-05-18, Stock:UNH, The news for the past five days is as follows:
2018-05-11: NEWS1: UnitedHealth Group Statement on Trump Administration's Drug Policy Proposal.NEWS2: Healthcare Stocks Rebound After President Trump's Speech on Drug Pricing.NEWS3: President Trump Unveils Plan to Lower Drug Prices, Drug Companies Spared.NEWS4: Trump Doesn't Know Who 'Middlemen' Are, But PBMs Okay With His Drug Price Agenda.NEWS5: DaVita Inc. -- Moody's assigns Baa3 ratings to DaVita's senior secured term loan add-ons.NEWS6: For Medicare recipients, Trump&apos;s drug price proposal can’t come soon enough.NEWS7: For Medicare recipients, Trump's drug price proposal can’t come soon enough.NEWS8: For Medicare enrollees Trump's drug price proposal can’t come soon enough.
2018-05-14: NEWS1: Dow Extends Win Streak in Low-Volume Session.NEWS2: Dow Extends Win Streak in Low-Volume Session.NEWS3: Close Update: Wall Street Clings to Gains With Dow Up 8th Day as U.S.-China Tensions Ease.NEWS4: Close Update: Wall Street Clings to Gains With Dow Up 8th Day as U.S.-China Tensions Ease.NEWS5: Market Close Report: NASDAQ Composite index closes at 7,411.32 up 8.44 points.NEWS6: Market Close Report: NASDAQ Composite index closes at 7,411.32 up 8.44 points.NEWS7: MARKETS: Alibaba, Baidu jump on Trump tweet; Disney, Walmart, UnitedHealth lead Dow higher; Retail earnings on tap.NEWS8: iShares Russell 3000 ETF Experiences Big Outflow.NEWS9: iShares Russell 3000 ETF Experiences Big Outflow.
2018-05-15: NEWS1: Big-name hedge funds bought healthcare stocks in 1st quarter.NEWS2: Dying mother takes her plea for a new liver straight to the top at insurer UnitedHealth.
2018-05-16: NEWS1: Moody’s likes the upward financial trend at this Lakeland pharmacy benefits manager.NEWS2: Free Stock Performance Review on UnitedHealth and Three Health Care Plans Stocks.
2018-05-17: NEWS1: Health Insurance Industry Outlook - May 2018.NEWS2: Health Insurance Industry Outlook - May 2018.NEWS3: United Health Foundation and Climb Wyoming Announce New $1 Million Partnership to Develop Innovative Social Support Programs.NEWS4: New Report on Senior Health Shows Rural Health Disparities Persist, Suicide Rates Are Up.

Answer: Rise