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:2021-07-28, Stock:PFE, The news for the past five days is as follows:
2021-07-21: NEWS1: South African company to start making Pfizer vaccine.NEWS2: Two doses of Pfizer, AstraZeneca shots effective against Delta variant, study finds.NEWS3: Pfizer Provides Update on U.S. FDA Review of Abrocitinib and XELJANZ® Filings.NEWS4: Why BioNTech Stock Jumped Today.NEWS5: Pfizer (PFE) Earnings Expected to Grow: What to Know Ahead of Next Week's Release.NEWS6: ‘It’s very premature to talk about booster vaccines’: Doctor.NEWS7: J&J COVID-19 vaccine sales to total  $2.5 billion in 2021.NEWS8: UPDATE 1-South African firm to help make Pfizer/BioNTech COVID vaccine.NEWS9: Norway, Lithuania swap J&J, Pfizer vaccines to speed up inoculation.NEWS10: The World Is Squandering Vaccines as New Wave Starts, WHO Chief Says.NEWS11: Pfizer, BioNTech partner with South African drug maker to make and distribute COVID-19 shot in Africa.NEWS12: Pfizer and BioNTech Announce Collaboration With Biovac to Manufacture and Distribute COVID-19 Vaccine Doses Within Africa.NEWS13: Pfizer/BioNTech strike South Africa COVID-19 manufacturing deal with Biovac.NEWS14: J&J forecasts $2.5 billion in 2021 COVID-19 vaccine sales, sets lower production target.NEWS15: UPDATE 5-J&J forecasts $2.5 bln in 2021 COVID-19 vaccine sales, sets lower production target.NEWS16: J&J raises revenue forecast, estimates $2.5 billion in COVID-19 vaccine sales.NEWS17: Will Pfizer Be Worth More Than Tesla by 2025?.NEWS18: J&J Gains On Revising Guidance After Medical Devices Boost In Q2.
2021-07-22: NEWS1: Australia's drug regulator approves Pfizer COVID-19 vaccine for 12 to 15-year-olds.NEWS2: Spacing Pfizer COVID shots boosts antibody levels after initial drop -study.NEWS3: UPDATE 1-U.S. CDC advisers mull COVID-19 boosters for immune-compromised people.NEWS4: Why Arvinas Jumped 10% Today.NEWS5: Column: Here's why the FDA shouldn't rush giving full approval to the COVID vaccines.NEWS6: ‘We haven’t seen the high consequence variants yet’: Doctor.NEWS7: CDC advisers consider boosters for immune-compromised Americans.NEWS8: Healthcare ETFs in Focus as Q2 Earnings Unfold.NEWS9: Why the Delta variant is so dangerous for the unvaccinated.NEWS10: The FDA may not fully approve a COVID-19 vaccine until January. Here’s why..NEWS11: Pfizer (PFE) Inks Vaccine Deal, Faces FDA Delay on JAK Drugs.NEWS12: 2 Dirt Cheap Dividend Stocks You Can Buy Right Now.NEWS13: Pfizer to pay at least $1 billion to develop, commercialize Arvinas' investigational breast-cancer therapy.NEWS14: FDA Will Not Meet Goal Dates For Pfizer's Xeljanz, Abrocitinib Applications.NEWS15: How Big of an Impact Will COVID-19 Have on the Stock Market Going Forward?.NEWS16: Arvinas and Pfizer Announce Global Collaboration to Develop and Commercialize PROTAC® Protein Degrader ARV-471.NEWS17: Arvinas Stock Surges on Pfizer Breast Cancer Treatment Deal.NEWS18: How in the World Is Moderna Valued at More Than Half of Pfizer's Market Cap?.NEWS19: WRAPUP 9-Olympics-Opening ceremony director fired on Tokyo Games eve over Holocaust joke.
2021-07-23: NEWS1: Doctor on the Olympics regarding COVID-19: ‘There are a lot of concerns’.NEWS2: 10 Best Dividend Contenders to Buy in 2021.NEWS3: This is the tipping point for when people vaccinated against COVID-19 should mask up again indoors.NEWS4: Booster Shots Seem More Likely. Israeli Data Show Delta Variant’s Risks..NEWS5: Pfizer vaccine 39% effective against Delta variant, NFL COVID outbreaks, Kanye West debuts new 'Donda' album.NEWS6: Arvinas (ARVN), Pfizer Team up for Breast Cancer Therapy.NEWS7: Will Pfizer (PFE) Beat Expectations This Earnings Season?.NEWS8: Why This Company’s Covid-19 Vaccine Is Just the Beginning.NEWS9: Pfizer and BioNTech to Supply U.S. With 200 Million COVID Shots.NEWS10: EU Drugs Regulator Recommends Moderna Shot for Teenagers.NEWS11: UPDATE 1-Spacing Pfizer COVID shots boosts antibody levels in long-term study.NEWS12: Pharma Stock Roundup: JNJ, NVS Q2 Earnings, PFE, ABBV, LLY & MRK FDA Updates.NEWS13: UPDATE 4-United States buys 200 mln more doses of Pfizer/BioNTech COVID-19 vaccine.NEWS14: Pfizer and BioNTech to supply U.S. govt with additional 200 million doses of COVID-19 vaccine.NEWS15: Pfizer says U.S. govt buys 200 mln more doses of COVID-19 vaccine.NEWS16: Pfizer and BioNTech to Provide U.S. Government with an Additional 200 Million Doses of COVID-19 Vaccine to Help Meet Continued Need for Vaccine Supply in the U.S..NEWS17: Is It Too Late to Buy Moderna Stock?.NEWS18: Why BioNTech, Moderna, and Novavax Stocks Soared This Week.NEWS19: Can Today's Vaccines Beat the Delta Variant?.NEWS20: Japan PM seeks faster COVID vaccine delivery from Pfizer- media.NEWS21: Pfizer's Inc. (NYSE:PFE) Dividend is Depending on Vaccine Booster Shots.NEWS22: US buys 200m Pfizer jabs for children and possible boosters.NEWS23: US seals deal for another 200m doses of Pfizer’s Covid vaccine.
2021-07-26: NEWS1: Moderna expanding children’s COVID-19 vaccine study to better assess safety.NEWS2: Doctor on COVID-19 vaccination: ‘Too little too late, better late than never, if anything it all counts’.NEWS3: Ocugen CEO on vaccine hesitancy in the U.S..NEWS4: Vaccination hesitancy amid Delta variant is putting two groups of people at particular risk, doctor says.NEWS5: UPDATE 1-Moderna in talks with FDA to expand COVID-19 vaccine pediatric study.NEWS6: FDA asks Pfizer and Moderna to expand COVID-19 vaccine pediatric studies- NYT.NEWS7: UPDATE 1-Israel weighing COVID booster shots for over 60s before FDA approval.NEWS8: Covid Boosters Are Coming This Year for People 50 and Older, Citi Analyst Predicts.NEWS9: Israel weighing COVID booster shots for over 60s before FDA approval.NEWS10: Pfizer and Moderna Urged to Expand COVID Vaccine Studies of Children 5 to 11.NEWS11: Here's Why the Bad News About the Pfizer Vaccine Isn't So Bad.NEWS12: Is It Too Late to Buy Novavax Stock?.NEWS13: Mixed AstraZeneca-Pfizer shot boosts COVID antibody level - study.NEWS14: Arvinas, Inc. (ARVN) Moves 13% Higher: Will This Strength Last?.NEWS15: S.Korea starts vaccination for 55-59 age group as COVID-19 caseloads remain high.
2021-07-27: NEWS1: CDC urges some vaccinated to wear masks again.NEWS2: CDC: Vaccinated Americans should start wearing masks again indoors in areas with high COVID-19 transmission rates.NEWS3: ‘There’s a great opportunity that we’ll have another variant’: Doctor.NEWS4: Why Earnings Season Could Be Great for Pfizer (PFE).NEWS5: Pfizer Earnings: What to Look For From PFE.NEWS6: Drug/Biotech Stock Earnings on Jul 28: PFE, GSK, BMY, BMRN & TLRY.NEWS7: Argentina signs deal with Pfizer for 20 mln COVID-19 vaccine doses, minister says.NEWS8: 200 Million More Reasons to Buy Pfizer Stock.NEWS9: EU says it is on track for 70% vaccination target by end summer.NEWS10: UPDATE 2-Antibodies from Sinovac's COVID-19 shot fade after about 6 months, booster helps - study.NEWS11: BioNTech CEO Says Vaccine Is Growing Less Effective, but Still Prevents Severe Disease.

Answer: Rise