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:2021-04-29, Stock:PFE, The news for the past five days is as follows:
2021-04-22: NEWS1: US Indexes Close Lower Thursday.NEWS2: 'We are still dealing with the unknown' Doctor on Covid-19.NEWS3: Vaccine trials on pregnant women show reassuring results: Doctor.NEWS4: CORRECTED-Pfizer COVID-19 shot effective for people with chronic diseases- Israel study.NEWS5: Coronavirus: The risk going forward is 'general confidence in vaccines'.NEWS6: Pfizer Declares Second-Quarter 2021 Dividend.NEWS7: UPDATE 1-Thailand says Russia agrees to supply Sputnik V COVID-19 vaccine.NEWS8: RPT-INSIGHT-How South Korea turbocharged specialty syringe production for COVID-19 vaccines.NEWS9: India to expand vaccinations but supplies tight, imports delayed.NEWS10: Could This Little-Known Company's Vaccine Candidate Leapfrog Moderna and Pfizer?.NEWS11: Can Pfizer's COVID Vaccine Beat the South African Variant?.NEWS12: Pfizer and BioNTech Vaccine Sales Jump $1.4 Billion Thanks to AstraZeneca's Blunders.NEWS13: Evonik starts lipid deliveries for Pfizer/BioNTech COVID-19 vaccine ahead of time.
2021-04-23: NEWS1: U.S. Ends Pause on Johnson & Johnson’s Covid Vaccine. What to Know..NEWS2: Johnson & Johnson Vaccine Can Resume in U.S., Panel Advises.NEWS3: 'Hopeful that JNJ coronavirus vaccine pause is lifted by FDA': Doctor.NEWS4: Moderna Is More Than Its Covid Vaccine. Why It’s Time to Buy the Stock..NEWS5: COVID SCIENCE-Third-trimester vaccination appears safe; Pfizer/BioNtech vaccine effective in those with chronic illnesses.NEWS6: Moderna’s Vaccine Has Been a Success. Buy the Stock Because There’s More Coming in Its Pipeline..NEWS7: Doctor: COVID-19 variants have 'represented incremental setbacks'.NEWS8: UPDATE 1-EU approves ramp-up of Pfizer vaccine manufacturing site in Belgium.NEWS9: Pharma Stock Roundup: JNJ's Q1 Earnings & Sales Beat, RHHBY Sales, & Other Updates.NEWS10: 1 Cheap Pharmaceutical Stock to Buy in 2021.NEWS11: UK Vaccination Studies Show 65% Drop In COVID-19 Infections After Single Dose Of Pfizer Or AstraZeneca Jab: Reports.NEWS12: EU to conclude deal for 1.8 bln vaccines with Pfizer/Biontech in days.NEWS13: UPDATE 4-EU to shortly sign world's largest vaccine deal with Pfizer.NEWS14: Is It Too Late to Buy Ocugen Stock?.NEWS15: The Biggest mRNA Winner: Pfizer, BioNTech, Moderna, or an Under-the-Radar Biotech?.
2021-04-26: NEWS1: Biden will reportedly announce new CDC mask guidance Tuesday.NEWS2: Pfizer (PFE) Gains But Lags Market: What You Should Know.NEWS3: The Johnson & Johnson vaccine ‘has become critically important’: Doctor.NEWS4: Doctor on updated mask guidelines: 'I think the time is now'.NEWS5: Biden set to announce new CDC mask guidance Tuesday: RPT.NEWS6: Adobe inks cloud deals with Pfizer, Walgreens, other healthcare companies.NEWS7: Merck (MRK) to Report Q1 Earnings: What's in the Cards?.NEWS8: France's Sanofi to help Moderna manufacture COVID-19 shots.NEWS9: Travel stocks rally as EU set to welcome vaccinated American tourists this summer.NEWS10: UPDATE 1-Moderna vaccine to be reviewed for WHO emergency listing on April 30 - WHO spokesman.NEWS11: When It Comes to a Travel Restart All Vaccines Are Not Equal.
2021-04-27: NEWS1: CDC says masks no longer necessary outdoors, with caveats.NEWS2: COVID-19 Oral Antiviral Drug From Pfizer Could Be Available By 2021, Says CEO: CNBC.NEWS3: CDC’s latest guidance on outdoor mask wearing ‘is a big milestone’: Doctor.NEWS4: UPDATE 2-U.S. CDC has not seen link between heart inflammation and COVID-19 vaccines.NEWS5: Scientists, doctors slam Hungarian government criticism of western vaccines.NEWS6: Swedish PM given COVID-19 vaccine, urges population to follow suit.NEWS7: Top 4 Mutual Fund Holders of Pfizer.NEWS8: Argentina restarts talks with Pfizer into buying its coronavirus vaccine.NEWS9: Is There Any Hope for Inovio?.NEWS10: Pfizer and BioNTech About to Sign the Biggest Vaccine Supply Deal Ever: Why It's Great News for Investors.NEWS11: UPDATE 1-Japan's defense ministry to open mass vaccination centre in Tokyo.NEWS12: Top U.S. trade negotiator meets Pfizer, AstraZeneca execs on COVID-19 IP waiver.
2021-04-28: NEWS1: Starbucks CEO: Vaccines and the 'great human reconnection' create a 2- to 3-year tailwind.NEWS2: UPDATE 1-Britain orders 60 million Pfizer COVID-19 shots for booster programme.NEWS3: It’s ‘good to lift’ COVID-19 restrictions right now: UAB Epidemiologist .NEWS4: Britain agrees deal for 60 million more Pfizer COVID-19 vaccines.NEWS5: Teva Abandons Search to Make Covid-19 Vaccine for Partners.NEWS6: Healthcare ETFs on Radar As Q1 Earnings Unfold.NEWS7: Older adults 94% less likely to be hospitalized with COVID after receiving Pfizer or Moderna vaccines: CDC.NEWS8: Vaccinated Americans 'can now enjoy some more freedoms,' health expert explains.NEWS9: "Pioneering" Chile moves to cover pregnant women with COVID-19 vaccines.NEWS10: Pfizer Invites Public to Listen to Webcast of Pfizer Discussion at Healthcare Conference.NEWS11: UPDATE 1-English official says she is hopeful COVID vaccine protection will not wane quickly.NEWS12: UPDATE 4-GSK focused on split as cost checks, COVID-19 easings aid earnings.NEWS13: CORRECTED-UPDATE 2-Waivers for vaccine production "not a solution" - BioNTech.NEWS14: Pfizer Acquires Amplyx Pharmaceuticals.NEWS15: Pfizer buys Amplyx to expand drug-resistant treatment portfolio.NEWS16: Japan's unused 14 mln doses of COVID-19 vaccines point to logistical hurdles.NEWS17: Here's the Biggest Risk With Buying Ocugen Stock Right Now.NEWS18: UK regulator sees no heart inflammation concerns from Pfizer COVID shot.NEWS19: RPT-Scientists, doctors slam Hungarian government criticism of western vaccines.NEWS20: S.Korea to lift mandatory quarantine for residents fully vaccinated against COVID-19.NEWS21: Beyond a Vaccine, Pfizer Looks to Treat COVID-19.NEWS22: BioNTech chief confident Covid jab will work against Indian variant.

Answer: Decrease