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:2018-12-31, Stock:PFE, The news for the past five days is as follows:
2018-12-21: NEWS1: After Hours Most Active for Dec 21, 2018 :  CSCO, BAC, MSFT, XOM, AAPL, GE, PFE, QQQ, MBI, MU, KGC, FB.NEWS2: After Hours Most Active for Dec 21, 2018 :  CSCO, BAC, MSFT, XOM, AAPL, GE, PFE, QQQ, MBI, MU, KGC, FB.NEWS3: AbbVie (ABBV) Seeks Approval for RA Candidate Upadacitinib.NEWS4: AbbVie (ABBV) Seeks Approval for RA Candidate Upadacitinib.NEWS5: Pfizer and GlaxoSmithKline’s Joint Venture: What to Expect.NEWS6: Merck KGaA-Pfizer to end late-stage ovarian cancer treatment study.NEWS7: AbbVie (ABBV) Seeks Approval for RA Candidate Upadacitinib.NEWS8: Do Analysts See Any Upside for Sarepta Stock?.NEWS9: Analyzing Sarepta Therapeutics’ Gross Margin Trends.NEWS10: Taking Stock of Sarepta’s Latest Performance.NEWS11: Understanding Sarepta Therapeutics’ Operational Performance.NEWS12: Merck KGaA, Darmstadt, Germany, and Pfizer Provide Update on JAVELIN Ovarian 100 Trial of Avelumab in Previously Untreated Advanced Ovarian Cancer.NEWS13: Pfizer and GlaxoSmithKline’s Consumer Health Business.NEWS14: Pfizer Xtandi Succeeds in Late-Stage Prostate Cancer Study.NEWS15: Pfizer Xtandi Succeeds in Late-Stage Prostate Cancer Study.NEWS16: Pfizer and GlaxoSmithKline Form a Joint Venture.NEWS17: Former P&G manager named CEO of $12B joint venture.NEWS18: Pharma Stock Roundup: GSK, PFE Ink Consumer Health JV, JNJ Hit by Talc Allegations.NEWS19: Pharma Stock Roundup: GSK, PFE Ink Consumer Health JV, JNJ Hit by Talc Allegations.NEWS20: GlaxoSmithKline Capital Inc. -- Moody's affirms GSK's A2 ratings; outlook remains negative.NEWS21: Pfizer Xtandi Succeeds in Late-Stage Prostate Cancer Study.NEWS22: Pharma Stock Roundup: GSK, PFE Ink Consumer Health JV, JNJ Hit by Talc Allegations.NEWS23: The Daily Biotech Pulse: Proteostasis Delays Data, Akron Gets New CEO, Pfizer Halts Vaccine Trial.NEWS24: [$$] European Equities Market Talk Roundup.NEWS25: Pfizer Discontinues Phase 2b STRIVE Clinical Trial Due To Futility.NEWS26: Pfizer Discontinues Phase 2b STRIVE Clinical Trial Due To Futility.
2018-12-24: NEWS1: After Hours Most Active for Dec 24, 2018 :  S, QQQ, SQQQ, KGC, PLNT, PFE, BAC, MU, QSR, INTC, IEF, SLM.NEWS2: After Hours Most Active for Dec 24, 2018 :  S, QQQ, SQQQ, KGC, PLNT, PFE, BAC, MU, QSR, INTC, IEF, SLM.NEWS3: How Pfizer’s Sutent and Xalkori Have Performed.NEWS4: This Drug Is Expected to Be a Significant Driver for Pfizer.NEWS5: How Pfizer’s Oncology Business Is Positioned.NEWS6: Health Care Sector Update for 12/24/2018: ACOR, CDXC, RDY, JNJ, PFE, MRK, ABT, AMGN.NEWS7: Health Care Sector Update for 12/24/2018: ACOR, CDXC, RDY, JNJ, PFE, MRK, ABT, AMGN.NEWS8: Pfizer/Merck KGaA End Bavencio Ovarian Cancer Phase III Study.NEWS9: Pfizer Falls 3%.
2018-12-26: NEWS1: How to Save $650 Million Without Really Trying.NEWS2: How to Save $650 Million Without Really Trying.NEWS3: Pfizer Rises 3%.NEWS4: Here Are The 5 Best Dividend Stocks On The Dow Jones Average By Yield.NEWS5: How to Save $650 Million Without Really Trying.NEWS6: Should You Buy PFE Stock on Pfizer’s Joint Venture With Glaxo?.NEWS7: Will Big Pharma's Giant Maw Scoop Up These Small-Cap Players?.NEWS8: Bristol-Myers Squibb Stock Is Coming Back Slow, but That’s Fine.NEWS9: Pfizer’s Prevnar 13 and Other Developments.
2018-12-27: NEWS1: After Hours Most Active for Dec 27, 2018 :  PENN, QQQ, ZNGA, RFP, PFE, MGM, T, ACB, TWTR, IQ, INTC, HOLX.NEWS2: After Hours Most Active for Dec 27, 2018 :  PENN, QQQ, ZNGA, RFP, PFE, MGM, T, ACB, TWTR, IQ, INTC, HOLX.NEWS3: Top Dow Jones Stock Of 2018: Microsoft, Nike, Merck, Pfizer, Visa Vie For No. 1.NEWS4: Dow Analyst Moves: PFE.NEWS5: Dow Analyst Moves: PFE.NEWS6: Pfizer Invites Public to Listen to Webcast of Pfizer Discussion at Healthcare Conference.NEWS7: Health Care Sector Update for 12/27/2018: AXSM, HSIC, BSX, JNJ, PFE, ABT, MRK, AMGN.NEWS8: Health Care Sector Update for 12/27/2018: AXSM, HSIC, BSX, JNJ, PFE, ABT, MRK, AMGN.NEWS9: Stocks down in December for pharma firms in the Triangle.
2018-12-28: NEWS1: Pfizer (PFE) Gains As Market Dips: What You Should Know.NEWS2: Conatus (CNAT) Focuses on Developing NASH Candidate Emricasan.NEWS3: After Hours Most Active for Dec 28, 2018 :  ZAYO, BAC, ORCL, QQQ, FDC, PFE, PCG, MSFT, AAPL, DOCU, FOLD, NWL.NEWS4: After Hours Most Active for Dec 28, 2018 :  ZAYO, BAC, ORCL, QQQ, FDC, PFE, PCG, MSFT, AAPL, DOCU, FOLD, NWL.NEWS5: IVV, PFE, UNH, MRK: ETF Inflow Alert.NEWS6: IVV, PFE, UNH, MRK: ETF Inflow Alert.NEWS7: Will AbbVie (ABBV) Shares Regain Lost Momentum in 2019?.NEWS8: Will AbbVie (ABBV) Shares Regain Lost Momentum in 2019?.NEWS9: Will AbbVie (ABBV) Shares Regain Lost Momentum in 2019?.NEWS10: Health Care Sector Update for 12/28/2018: APHA, MESO, HTGM, JNJ, PFE, ABT, MRK, AMGN.NEWS11: Health Care Sector Update for 12/28/2018: APHA, MESO, HTGM, JNJ, PFE, ABT, MRK, AMGN.

Answer: Rise