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:2018-02-05, Stock:UNH, The news for the past five days is as follows:
2018-01-29: nan
2018-01-30: NEWS1: Cramer reveals the way to play the Amazon-Berkshire-JP Mo....NEWS2: Dow Suffers Worst Day Since May.NEWS3: Dow Suffers Worst Day Since May.NEWS4: Long-Dreaded Amazon Threat to Drug Middlemen Draws Closer.NEWS5: 5 Dow stocks have fallen 4% or more over the past week.NEWS6: Close Update: Crypto Rout, Healthcare Sell-Off Rattles Wall Street.NEWS7: Close Update: Crypto Rout, Healthcare Sell-Off Rattles Wall Street.NEWS8: Market Close Report: NASDAQ Composite index closes at 7,402.48 down -64.03 points.NEWS9: Market Close Report: NASDAQ Composite index closes at 7,402.48 down -64.03 points.NEWS10: [$$] Winners and Losers as Buffett, Bezos, Dimon Tackle Health Care.NEWS11: Notable Tuesday Option Activity: ADBE, UNH, RSPP.NEWS12: Notable Tuesday Option Activity: ADBE, UNH, RSPP.NEWS13: HCA Healthcare's (HCA) Q4 Earnings, Revenues Beat Estimates (Revised).NEWS14: HCA Healthcare's (HCA) Q4 Earnings, Revenues Beat Estimates (Revised).NEWS15: UnitedHealth shares dive as Amazon, Berkshire Hathaway, JP Morgan Chase team up on health care.NEWS16: Amazon Health Care Disruption Fears Clash With This Reality.NEWS17: UnitedHealth changing health care more than Amazon: Analy....NEWS18: CVS, other health stocks down upon Amazon, JPMorgan, Berkshire healthcare co news.NEWS19: Indexes Bleed More Red Ahead Of Fed, Earnings, Jobs Data.NEWS20: UnitedHealth Group Inc Stock Is Already Set for a Comeback.NEWS21: UnitedHealth Group Inc Stock Is Already Set for a Comeback.NEWS22: Midday Update: Wall Street Unhinged By Bond Rout, Healthcare Sector Sell-Off.NEWS23: Midday Update: Wall Street Unhinged By Bond Rout, Healthcare Sector Sell-Off.NEWS24: Can Pharmacy Services Drive CVS Health's (CVS) Q4 Earnings?.NEWS25: Can Pharmacy Services Drive CVS Health's (CVS) Q4 Earnings?.NEWS26: Aetna (AET) Q4 Earnings Top Estimates, Enrollment Declines.NEWS27: Aetna (AET) Q4 Earnings Top Estimates, Enrollment Declines.NEWS28: How UnitedHealth Group Makes its Money.NEWS29: Apple worries grow, UnitedHealth and insurers tumbling, Callidus snagged by SAP.NEWS30: Apple worries grow, UnitedHealth and insurers tumbling, Callidus snagged by SAP.NEWS31: Dow Movers: UNH, NKE.NEWS32: Dow Movers: UNH, NKE.NEWS33: Dow Tumbles 190 Points as Amazon Health Plans Slam UnitedHealth.NEWS34: UnitedHealth stock exacts 85-point toll from tumbling Dow industrials.NEWS35: Amazon, Berkshire Hathaway, JPMorgan Chase Team On Health Care; CVS, UnitedHealth Dive.NEWS36: Pre-Market Most Active for Jan 30, 2018 :  QQQ, NMR, TVIX, CALD, TEVA, NOK, AAPL, UNH, GNRT, PFE, ABLX, SQQQ.NEWS37: All 30 Dow company stocks drop, as UnitedHealth lops over 100 points off Dow's price.NEWS38: UnitedHealth, CVS plunge on Bezos, Buffett and Dimon plan to improve U.S. health care.NEWS39: UnitedHealth, CVS plunge on Bezos, Buffett and Dimon plan to improve U.S. health care.NEWS40: Dow Set For Another Triple-Digit Loss As Apple, UnitedHealth Drag.
2018-01-31: NEWS1: NYSE trader: We're starting to see some rotation out of health care stocks.NEWS2: What To Make Of The Amazon, Berkshire Hathaway and JP Morgan Healthcare Company.NEWS3: What To Make Of The Amazon, Berkshire Hathaway and JP Morgan Healthcare Company.NEWS4: Taking UnitedHealth's Temperature After Amazon-Berkshire-JPMorgan Announcement.NEWS5: Anthem (ANTM) Tops Q4 Earnings & Revenues, Issues '18 View.NEWS6: Anthem (ANTM) Tops Q4 Earnings & Revenues, Issues '18 View.NEWS7: Dow Movers: MRK, BA.NEWS8: Dow Movers: MRK, BA.NEWS9: Leerink Suggests 4 Health Care Plays On Recent Weakness.NEWS10: Anthem (ANTM) Tops Q4 Earnings & Revenues, Issues &apos;18 View.NEWS11: Empresas Banmédica, UnitedHealth Group Complete Combination.NEWS12: See what the IHS Markit Score report has to say about UnitedHealth Group Inc..NEWS13: See what the IHS Markit Score report has to say about UnitedHealth Group Inc..NEWS14: Stocks Hit Hard Amid Harsh Headwinds.NEWS15: Stocks Hit Hard Amid Harsh Headwinds.NEWS16: How to play the Amazon-Berkshire-JP Morgan health care mo....
2018-02-01: NEWS1: U.S. government proposes 1.84 pct hike in 2019 payments to Medicare insurers.NEWS2: IWF, UNH, PEP, MMM: Large Outflows Detected at ETF.NEWS3: IWF, UNH, PEP, MMM: Large Outflows Detected at ETF.NEWS4: Top Ranked Momentum Stocks to Buy for February 1st.NEWS5: Top Ranked Momentum Stocks to Buy for February 1st.NEWS6: Cigna Q4 Earnings Top on Higher Enrollment, 2018 View Issued.NEWS7: Cigna Q4 Earnings Top on Higher Enrollment, 2018 View Issued.NEWS8: UnitedHealth Group (UNH): Strong Industry, Solid Earnings Estimate Revisions.NEWS9: UnitedHealth Group (UNH): Strong Industry, Solid Earnings Estimate Revisions.NEWS10: Top Ranked Momentum Stocks to Buy for February 1st.NEWS11: UnitedHealth Group (UNH): Strong Industry, Solid Earnings Estimate Revisions.NEWS12: Revealed: The Top 10 Stocks in the Fool 100 Index.NEWS13: Revealed: The Top 10 Stocks in the Fool 100 Index.
2018-02-02: NEWS1: Yahoo Finance Answers: Will Amazon make my health care cheaper?.

Answer: Decrease