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:2021-06-28, Stock:PFE, The news for the past five days is as follows:
2021-06-21: NEWS1: Pfizer (PFE) Outpaces Stock Market Gains: What You Should Know.NEWS2: Delta Strain Spreads in U.S., Canada Eases Travel: Virus Update.NEWS3: Delta COVID-19 variant likely to become dominant U.S. strain: Doctor.NEWS4: Why BioNTech Stock Is Rising Today.NEWS5: There's 'huge demand' to vaccinate the world amid COVID variant concerns: Doctor.NEWS6: Pfizer Vaccine Approved for 12-15-Year Olds in New Zealand – Report.NEWS7: Will Emergence of COVID-19 Delta Variant Aid Vaccine Makers?.NEWS8: India in talks to find 'middle ground' with Pfizer, others for vaccine imports -govt official.
2021-06-22: NEWS1: CORRECTED-UPDATE 2-AstraZeneca, Pfizer vaccines effective against Delta COVID-19 variants-study.NEWS2: Less Turbulence Ahead for Spirit AeroSystems.NEWS3: BioNTech to look into possible dividend next year.NEWS4: Switzerland recommends 12-15 year olds get Pfizer/BioNTech COVID-19 shot.NEWS5: New research says Pfizer and Moderna's mRNA vaccines don't affect sperm parameters.NEWS6: CDC committee to discuss rare cases of myocarditis occurring in people who have gotten their COVID-19 shots.NEWS7: GSK- Pfizer's ViiV To Develop 'Ultra-Long-Acting' HIV Drugs With $215M Halozyme Deal.NEWS8: ViiV Healthcare and Halozyme enter global collaboration and license agreement for ENHANZE® drug delivery technology to enable development of "ultra long-acting" medicines for HIV.
2021-06-23: NEWS1: Why Moderna and BioNTech Stocks Slipped Today.NEWS2: Vaccine Stocks Dive As CDC Finds 'Likely Association' Between Covid Shots, Heart Inflammation.NEWS3: Is Pfizer Stock A Buy As It Eyes $26 Billion In Full-Year Covid Vaccine Sales?.NEWS4: NIH begins clinical trial testing COVID-19 vaccine in pregnant women.NEWS5: IBD/TIPP Poll: Most Americans Support Covid Vaccine Passports — But Will Pfizer, Moderna Benefit?.NEWS6: ‘Vaccination is very effective against the Delta variant’: Doctor.NEWS7: UPDATE 4-FDA to add warning about rare heart inflammation to Pfizer, Moderna vaccines.NEWS8: Warren Buffett Donating $4.1 Billion of Berkshire Stock to Five Foundations.NEWS9: Warren Buffet Donating $4.1 Billion of Berkshire Stock to Five Foundations.NEWS10: Pfizer argues its case in federal court for helping seniors meet drug copays.NEWS11: U.S. panel to review heart inflammation cases after Pfizer, Moderna vaccines.NEWS12: First Participant Dosed in Pfizer’s Pivotal Phase 3 TALAPRO-3 Combination Study of Talazoparib and Enzalutamide in Metastatic Castration-Sensitive Prostate Cancer (mCSPC).NEWS13: GSK sets out plans for listing of consumer products venture.NEWS14: How Pfizer and Moderna Could Profit Big-Time From AstraZeneca's and CureVac's Challenges.NEWS15: GSK boss promises sales of £33bn in attempt to head off activist Elliot.NEWS16: Delta variant prompts Israeli rethink of quarantine waiver for COVID vaccinees.NEWS17: CDC panel finds ‘likely association’ between mRNA jabs and heart inflammation.
2021-06-24: NEWS1: UPDATE 2-Pfizer halts distribution of anti-smoking drug after finding carcinogen.NEWS2: UPDATE 1-Pfizer says COVID vaccine is highly effective against Delta variant.NEWS3: ‘Unchecked spread in the U.S. is going to lead to other problems’: Doctor.NEWS4: A Covid underclass is forming.NEWS5: Swiss health ministry data shows vaccinated people seldom hit by COVID-19.NEWS6: UPDATE 2-EU slightly cuts estimates for vaccine deliveries this year.NEWS7: Pfizer (PFE) Begins Dosing in Prostate Cancer Drugs Study.NEWS8: 2 Bargain Stocks You Can Buy Right Now.NEWS9: The CDC Isn’t Convinced Yet That Covid-19 Boosters Are Required. What It Means for Vaccine Stocks..NEWS10: Pfizer Begins Patient Dosing in Phase 3 Prostate Cancer Drug Trial.NEWS11: Pfizer Declares Third-Quarter 2021 Dividend.NEWS12: mRNA vaccine-makers’ stocks take a hit amid possible link to rare heart conditions.NEWS13: Pfizer says COVID vaccine highly effective against Delta variant.
2021-06-25: NEWS1: Booster may be needed for J&J shot as Delta variant spreads, some experts already taking them.NEWS2: It’s concerning seeing variants popping up all over the world: Doctor.NEWS3: COVID SCIENCE-Vaccine-linked heart condition tends to resolve quickly; Delta variant fuses cells to infect more efficiently.NEWS4: Zero N.J. Deaths, WHO Warns of Delta’s Surge: Virus Update.NEWS5: Coronavirus vaccine: 'We really need to step up our game,' biocontainment expert says.NEWS6: UPDATE 1-South Africa to ramp up COVID-19 vaccinations as opposition protests.NEWS7: Pfizer Stops Global Smoking Cessation Pill Distribution After Flagging Impurities: Report.NEWS8: South Africa aims to more than double daily COVID-19 vaccinations over next month.NEWS9: How the Deadly Delta Variant Could Boost Pfizer's and Moderna's COVID Vaccine Sales.

Answer: Rise