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:2019-11-21, Stock:UNH, The news for the past five days is as follows:
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%.
2019-11-18: NEWS1: Dow Jones Today: The Slow Grind Higher Continues.NEWS2: Stock market news: November 18, 2019.NEWS3: Managed care stocks jump on Warren’s 2022 Medicare for All plans.NEWS4: Top Analyst Reports for Alphabet, Amazon & Johnson & Johnson.NEWS5: United Health and Cigna Stocks Are Rising Because the Medicare-for-All Threat Has Diminished.NEWS6: Major indexes mixed as markets aim for new highs.NEWS7: Stock Market News for Nov 18, 2019.NEWS8: UnitedHealth's stock rallies to pace the Dow's gainers, after SunTrust boosts price target.NEWS9: UnitedHealth (UNH) Looks Good: Stock Adds 5.3% in Session.NEWS10: Healthcare Stocks in Focus on  Price Transparency Rule.
2019-11-19: NEWS1: US Large-Cap Indexes Close With Gains on Monday.
2019-11-20: NEWS1: Walmart to pilot UnitedHealth-backed telehealth services for its Minnesota workers.NEWS2: 5 Corporate Giants That Popped After Latest Earnings Release.

Answer: Rise