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:2021-08-18, Stock:UNH, The news for the past five days is as follows:
2021-08-11: NEWS1: UnitedHealth Group Board Authorizes Payment of Quarterly Dividend.
2021-08-12: NEWS1: UnitedHealth settles charges it denied mental health, substance abuse coverage.
2021-08-13: NEWS1: Private Medicare plans must return overpayments, appeals court rules.
2021-08-16: NEWS1: Top Analyst Reports for Walmart, UnitedHealth & Starbucks.
2021-08-17: NEWS1: Dow Jones Slumps 400 Points; Home Depot Hit On Earnings, But 3 Recent IPOs Soar To New Highs.NEWS2: Here's Why You Should Retain UnitedHealth Group (UNH) Stock.

Answer: Decrease