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:2021-08-19, Stock:PFE, The news for the past five days is as follows:
2021-08-12: NEWS1: Israel set to offer COVID vaccine booster shots to under 60 year olds.NEWS2: Moderna Snaps Two-Day Losing Streak Ahead of Booster Update.NEWS3: Vaccine Stocks' Wild Ride Continues As FDA Reportedly Mulls Booster Shots.NEWS4: California State University Chancellor on return to campus amid the pandemic.NEWS5: FDA expected to authorize an extra COVID-19 dose for people with weak immune systems in the first regulatory OK for a booster shot in the U.S..NEWS6: U.S. FDA has not seen possible side-effects of COVID shots being studied in EU.NEWS7: If fully vaccinated your immunity is higher than someone who's unvaccinated: ER Physician.NEWS8: UPDATE 1-U.S. works with vaccine makers on booster dose for some -CDC director.NEWS9: FDA working to allow boosters for vulnerable people-CDC director.NEWS10: U.S. ships more than 500,000 doses of COVID-19 vaccine to Iraq.NEWS11: FDA Could Authorize Covid Booster Shots for Immunocompromised. What to Know..NEWS12: Merck's (MRK) Keytruda/Lenvima Get FDA Nod for Kidney Cancer.NEWS13: FDA nearing COVID-19 booster approval, California new vaccine rules for schools.NEWS14: mRNA COVID-19 Vaccine Makers Lose Steam After Strong Rally.NEWS15: FDA Could Authorize Covid-19 Boosters for Immunocompromised.NEWS16: CDC advisory committee to meet Friday, discuss COVID-19 booster shots.NEWS17: 3 Reasons Why You Might Not Want to Buy Pfizer Stock.NEWS18: BioNTech, Moderna Gain on Report of FDA’s Likely Nod for Booster.NEWS19: FDA set to approve third COVID-vaccine dose for those with weakened immune systems: report.
2021-08-13: NEWS1: Pfizer expands recall of anti-smoking drug over carcinogen presence.NEWS2: UPDATE 8-U.S. authorizes third shot of COVID-19 vaccines for the immunocompromised.NEWS3: Vaccine Stocks Nab Booster Shot OK, But Their Run Could Be Short-Lived.NEWS4: Dow Jones Rallies But Disney Gains Fade; Vaccine Boost For Pfizer; Virgin Galactic Stock Dives.NEWS5: Dow Jones Gains; Covid Vaccine News Boosts Pfizer; Branson Dumps Virgin Galactic Stock.NEWS6: Dow Jones Hits Record; Disney Earnings Gains Fade; Virgin Galactic Stock Dives Amid This.NEWS7: Texas Cruise Outbreak; CDC Panel Backs Third Shot: Virus Update.NEWS8: Novavax: Bronze Medal May Be Good Enough in COVID Race.NEWS9: CDC panel votes to recommend 3rd shot in immune compromised.NEWS10: Dow Jones Flat; Covid Vaccine News Boosts Pfizer; Richard Branson Dumps Virgin Galactic Stock.NEWS11: U.S. Authorizes Third Dose of Covid Vaccines. Don’t Call Them Booster Shots..NEWS12: Doctor on COVID: ‘We have to react to the public health information’.NEWS13: Why Pfizer, BioNTech, and Moderna Stocks Are Getting a Bump Today.NEWS14: Vaccine Stocks Fly On Booster Shot OK, But Their Run Could Be Short-Lived.NEWS15: Pfizer (PFE) Gets Fast Track Tag for Wilson Disease Candidate.NEWS16: US STOCKS-Strong Disney earnings push S&P 500, Dow to new peaks.NEWS17: FDA approves booster shot, Moderna’s vaccine effectiveness on variants, Facebook delays return to office.NEWS18: Moderna's Shot Seems To Have A Better Shot Against Delta Than Pfizer's.NEWS19: Pharma Stock Roundup: FDA Nod for SNY's Pompe Drug & New Use of MRK's Keytruda.NEWS20: Moderna stock rallies after FDA OKs booster shot of COVID-19 vaccine for most at-risk adults.NEWS21: FDA Authorizes U.S.’s First Covid-19 Booster Shots.NEWS22: US STOCKS-Dow, S&P 500 set for record open after Disney's strong earnings.NEWS23: FDA says doctors can give an extra COVID-19 dose to some people with weak immune systems. This is the first authorization for a booster shot in the U.S..NEWS24: UPDATE 1-FOCUS-Pfizer, Moderna seen reaping billions from COVID-19 vaccine booster market.NEWS25: Why Are Pfizer and Moderna Jacking Up COVID Vaccine Prices?.NEWS26: Pfizer, Moderna seen reaping billions from COVID-19 vaccine booster market.NEWS27: FOCUS-Pfizer, Moderna seen reaping billions from COVID-19 vaccine booster market.NEWS28: UPDATE 1-S.Korea signs new Pfizer vaccine deal; asks people to cut travel.NEWS29: BioNTech, Moderna Rise On Nod To Booster For Those With Weak Immunity.NEWS30: Israel expands COVID vaccine booster campaign to over 50s, health workers.NEWS31: Moderna Stock Jumps, Pfizer Gains as FDA Approves COVID Vaccine Booster.NEWS32: Disney, Pfizer, Moderna, COVID and Airbnb - 5 Things You Must Know Friday.NEWS33: FDA authorizes an extra COVID-19 dose for people with weak immune systems in the first regulatory OK for a booster shot in the U.S..NEWS34: UPDATE 4-U.S. FDA authorizes COVID-19 vaccine boosters for the immunocompromised.
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.

Answer: Decrease