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:2021-08-23, Stock:PFE, The news for the past five days is as follows:
2021-08-16: NEWS1: UPDATE 1-As Delta spreads, some travelers double up on COVID-19 vaccine in U.S..NEWS2: Pfizer Prices $1.0 Billion Sustainability Bond.NEWS3: Verizon Delays Office Return; India Advisory Cut: Virus Update.NEWS4: Doctor explains why COVID-19 cases are rising among children.NEWS5: Boehringer Ingelheim Scraps Lung Cancer Program With CureVac.NEWS6: Do You Need A COVID-19 Booster Dose? Pfizer-BioNTech Submit Initial Data To Support Idea.NEWS7: Pfizer and BioNTech Submit Covid Booster Vaccine Data to FDA.NEWS8: Pfizer Stock Heats Up On Booster Shot OK, But Is It A Buy Amid Its Climax-Run?.NEWS9: U.S. children covid hospitalizations hit ‘highest levels we’ve ever seen’: Doctor.NEWS10: UPDATE 2-Pfizer submits initial data for COVID-19 vaccine booster authorization.NEWS11: Doctor on delta variant: 'We have much more uncertainty than we would like'.NEWS12: Pfizer, BioNTech submit trial data on COVID-19 booster shot to FDA.NEWS13: Pfizer and BioNTech Announce Submission of Initial Data to U.S. FDA to Support Booster Dose of COVID-19 Vaccine.NEWS14: Pfizer's (PFE) Tick-Borne Encephalitis Vaccine Gets FDA Nod.NEWS15: Pfizer, BioNTech Submit Booster-Dose Data to FDA, See Trial Progress.NEWS16: As Covid Cases Spread, Vaccines Won’t Be Enough.NEWS17: FDA Approves Pfizer's Tick-Borne Encephalitis Vaccine.NEWS18: As Delta spreads, some travelers double up on COVID-19 vaccine in U.S..NEWS19: 3 Popular Robinhood Dividend Stocks You Can Buy Right Now.NEWS20: ACHV: ORCA-2 Fully Enrolled.NEWS21: Better Dividend Stock: AbbVie or Pfizer?.
2021-08-17: NEWS1: Delta Variant Catches Up with the Stock Market.NEWS2: Texas Governor Tests Positive; Masks in Chicago: Virus Update.NEWS3: 10 Healthcare Dividend Stocks Hedge Funds are Buying.NEWS4: ’Outside the hospital & inside the emergency department are struggling for staff members’: GMR Chief Medical Officer.NEWS5: Pfizer Pulls Out Additional Lots Of It Anti-Smoking Pill.NEWS6: The U.S. is reportedly preparing to give COVID-19 booster shots for everyone who qualifies.NEWS7: Pfizer (PFE)/BioNTech Give First COVID Jab Booster Data to FDA.NEWS8: 15 Best Momentum Stocks To Invest In.NEWS9: Booster Doses Could Come Soon as Delta Spreads Across U.S..NEWS10: Company News for Aug 17, 2021.NEWS11: UPDATE 2-UK regulator approves Moderna COVID-19 shot for 12 to 17-year-olds.NEWS12: The Daily Biotech Pulse: Lilly Reorganizes Business Units In Neuroscience Focus, Helius Medical Spikes On Breakthrough Designation, Ra Medical Sells Dermatology Business.NEWS13: Moderna Gains As UK Regulator Oks Covid Shot For Those Aged 12–17.NEWS14: Booster Shots Are Coming. Biotech Valuations Are Already Injected..NEWS15: Why Pfizer and Moderna Won't Make As Much Extra Money From U.S. Booster Doses As You Might Think.NEWS16: U.S. to recommend COVID booster for most people 8 months after vaccination: reports.
2021-08-18: NEWS1: British study shows COVID-19 vaccine efficacy wanes under Delta.NEWS2: UPDATE 2-U.S. to require nursing home employees to get COVID-19 shots.NEWS3: Pfizer Ousts Moderna as Day Traders’ Favorite Vaccine Maker.NEWS4: Doctor on U.S. COVID-19 Data : 'Our data collection is frankly pathetic'.NEWS5: Vaccine Stocks Fall After U.S. Officials Recommend Covid Booster Shots.NEWS6: Covid-19 Boosters Are Coming: Here’s What to Know.NEWS7: Jim Cramer: The Drug Cos. Are at Full Strength.NEWS8: Drop in COVID-19 vaccine efficacy against Delta seen in U.S. nursing homes.NEWS9: ‘We can’t rest complacently in the shield that the vaccines alone give us’: Doctor.NEWS10: 'You can contain this virus if you get vaccinated': Northwell Health CEO.NEWS11: Pfizer Inc.: 52-Week High Recently Eclipsed (PFE).NEWS12: Biden, Fauci, CDC director support COVID-19 booster shots.NEWS13: UPDATE 4-U.S. to begin offering COVID-19 vaccine booster shots in September.NEWS14: Pfizer Stock Moves Higher Again...What's Next?.NEWS15: UPDATE 1-U.S. to begin offering COVID-19 vaccine booster shots in September.NEWS16: Why Pfizer Stock Rallied To New Highs Today.NEWS17: Pfizer and Moderna’s booster recommendation, Malboro maker invests in inhalers, Tencent beats on profit.NEWS18: The White House Just Announced Its Covid Booster Plan. What to Know..NEWS19: Vaccine Stocks Mixed After U.S. Officials Recommend Covid Booster Shots.NEWS20: 10 Best Healthcare Dividend Stocks to Buy Now.NEWS21: Here's Why Johnson & Johnson's Vaccine Could Overtake Both Pfizer and Moderna.NEWS22: 3 Big Drug/Biotech Outperformers Worth Keeping an Eye On.NEWS23: White House Expected to Announce Booster Plan Today as Covid Cases Climb.NEWS24: UPDATE 1-Third Pfizer dose 86% effective in over 60s, Israeli HMO says.NEWS25: Pfizer Stock Rises, Moderna Lower After U.S. Approves COVID Booster Shots.
2021-08-19: NEWS1: Why Moderna, BioNTech, and Novavax Stocks Sank Today.NEWS2: The US could 'take the lead' in vaccine production: NAM CEO.NEWS3: HIV physician details who should be getting COVID-19 booster shots.NEWS4: Oxford-Led Study Shows Efficacy Of COVID-19 Vaccines Dwindles Over Time Against Delta Variant.NEWS5: Why annual COVID-19 booster shots might be unlikely.NEWS6: UPDATE 2-Israel extends COVID-19 vaccine boosters to people over 40, teachers.NEWS7: Scammers selling fake COVID-19 vaccination cards online.NEWS8: U.S. data collection on COVID-19 is 'pathetic': Expert.NEWS9: Morning Brief: The pandemic remains a part of the economic story.NEWS10: Coronavirus spread among kids 'is categorically different with Delta,' doctor explains.NEWS11: 11 Biotech Stocks Popular On Reddit.NEWS12: Pfizer Vaccine’s Efficacy Against Delta Variant Drops After Three Months: Study.NEWS13: US Set to Receive COVID-19 Vaccine Booster Dose Next Month.NEWS14: Pfizer's Charts Suggest a Strong Rally Ahead.NEWS15: Who can get a COVID booster shot, and where do you get one? Here’s what we know so far..NEWS16: The gap is growing between rich and poor nations on the back of COVID: Ian Bremmer.NEWS17: Thailand to explore injecting coronavirus vaccines under skin.NEWS18: Philippines earmarks $899 mln for COVID-19 booster shots.
2021-08-20: NEWS1: Pfizer, BioNTech stocks rise on report FDA could fully approve COVID-19 vaccine.NEWS2: Pfizer and BioNTech shares rise on report FDA could fully approve COVID-19 vaccine next week.NEWS3: Pfizer, BioNTech stocks rises on report FDA could fully approve COVID-19 vaccine.NEWS4: Shopping for a Solid Stock? Consider Walmart..NEWS5: UPDATE 3-U.S. FDA aims to give full approval to Pfizer vaccine on Monday -NYT.NEWS6: Biotech ETFs to Benefit From Latest Booster Update.NEWS7: XELJANZ® (tofacitinib citrate) Receives Marketing Authorization in the European Union for the Treatment of Active Polyarticular Juvenile Idiopathic Arthritis and Juvenile Psoriatic Arthritis.NEWS8: Similarweb: 'Consumer demand for travel is showing minimal signs of slowdown'.NEWS9: UPDATE 1-Moderna mandates COVID-19 vaccination for U.S. employees.NEWS10: Doctor to immunocompromised: 'You should be getting your booster shot'.NEWS11: FDA Reportedly Nears Full Approval for Pfizer-BioNTech Vaccine.NEWS12: FDA Nears Full Approval for Pfizer-BioNTech Vaccine: Report.NEWS13: Doctor on U.S. travel amid the pandemic: ‘I wouldn’t be surprised if we see more restrictions’.NEWS14: UPDATE 1-U.S. gives 500,000 vaccine doses to Kosovo - Blinken.NEWS15: U.S. Officials Examine Reports Rare Vaccine Side Effect Is More Common With Moderna Than Pfizer.NEWS16: U.S. gives 500,000 vaccine doses to Kosovo - Blinken.NEWS17: U.S. shipping COVID-19 vaccine doses to Togo, Angola - official.NEWS18: Patients 'getting sicker' amid Delta variant surge: Doctor.NEWS19: Coronavirus: 'We’re really still too much in the dark,' Yale professor says.NEWS20: Is Moderna (MRNA) COVID-19 Jab Heart Risk More Than Pfizer's?.NEWS21: Pharma Stock Roundup: FDA Nod for MRK, PFE Products & New Use of LLY, GSK Drugs.NEWS22: PM has third COVID-19 shot as Israel extends booster campaign.NEWS23: UPDATE 2-U.S. reviewing if Moderna shot tied to higher heart inflammation risk - Washington Post.NEWS24: U.S. probing Moderna vaccine for increased heart inflammation risk - Washington Post.

Answer: Rise