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:2021-11-15, Stock:UNH, The news for the past five days is as follows:
2021-11-08: NEWS1: 2 Leading Healthcare Stocks to Buy in 2021 and Beyond.
2021-11-09: NEWS1: Why This 1 Medical Stock Could Be a Great Addition to Your Portfolio.NEWS2: United Health Foundation Grant to Children’s National Hospital to Address Health Needs of Youth in Communities With Fewer Resources.
2021-11-10: NEWS1: 7 Defensive Stocks To Add Portfolio Stability in the Fourth Quarter.NEWS2: A Record Number of Americans Surveyed Say They Are Prepared to Select a Health Plan During Open Enrollment.NEWS3: Helping Children Access Care in Our Nation's Capital.
2021-11-11: nan
2021-11-12: nan

Answer: Decrease