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:2019-11-18, Stock:UNH, The news for the past five days is as follows:
2019-11-11: NEWS1: The Zacks Analyst Blog Highlights: Mastercard, UnitedHealth, Merck, Qualcomm and CVS Health.NEWS2: How This Top Fund Tackles Difficult Market.NEWS3: Sir Andrew Witty Named UnitedHealth Group President.
2019-11-12: nan
2019-11-13: NEWS1: Checkup for Healthcare Moats.
2019-11-14: NEWS1: Boeing, UnitedHealth share gains lead the way, but Dow flat.NEWS2: UnitedHealth (UNH) Up 7% Since Last Earnings Report: Can It Continue?.
2019-11-15: NEWS1: US Indexes Close Higher Friday and for the Week.NEWS2: Warren Maps 3-Year Timeline Toward Medicare for All; Stocks Rise.NEWS3: Health stocks post best day in 10 months as Trump announces transparency rules.NEWS4: UnitedHealth, HCA Break Out As Health Care Stocks Jump For Trump Medical Price Transparency.NEWS5: Major Stock Indexes Hit Record Highs On China Trade Optimism; Apple Hits Profit Zone.NEWS6: Stock Market Live Updates: DOW 28,000.NEWS7: Dow's 175-point jump led by gains in shares of UnitedHealth, Pfizer.NEWS8: UnitedHealth Rises 4%.

Answer: Rise