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:2021-06-21, Stock:PFE, The news for the past five days is as follows:
2021-06-14: NEWS1: Pfizer (PFE) Stock Sinks As Market Gains: What You Should Know.NEWS2: Novavax CEO: Its COVID-19 vaccine will have biggest impact outside of US.NEWS3: Vaccine Stocks Slide After Novavax Shot Proven Effective.NEWS4: Is Pfizer Inc. (PFE) A Good Stock To Buy?.NEWS5: We’re a good 18 months away before there’s enough vaccine to stop COVID-19’s worldwide spread: Epidemiologist.NEWS6: Novavax Vaccine Is Real Competition for Pfizer and Moderna.NEWS7: UK study finds vaccines offer high protection against hospitalisation from Delta variant.NEWS8: Most of our vaccine will go to middle and low income countries: Novavax CEO.NEWS9: Ethics have been ‘pushed to the back’ amid COVID-19: Doctor.NEWS10: UPDATE 1-Norway eyes delay to COVID-19 vaccinations.NEWS11: UPDATE 2-J&J to send S.Africa more than 300,000 vaccine doses, says Aspen.NEWS12: If a COVID Vaccine Becomes Seasonal, Watch Novavax: Here's 2 Ways to Trade It.
2021-06-15: NEWS1: UPDATE 1-UK ministers to be advised against mass vaccination for children - The Telegraph.NEWS2: Workers sue over mandatory COVID-19 vaccination.NEWS3: Novavax Fell After Vaccine News. Rivals’ Stocks Tell the Real Story..NEWS4: Novavax’s Covid Vaccine Is Real Competition for Pfizer and Moderna.NEWS5: AstraZeneca, Pfizer Vaccines Offer Strong Protection From Delta Variant.NEWS6: UPDATE 1-Japan should have scrapped domestic trials to speed COVID shots - vaccine chief.NEWS7: How Worrisome Are Heart Issues Reported With Pfizer's and Moderna's COVID Vaccines?.NEWS8: AstraZeneca's 'Storm Chaser' COVID trial misses goal but offers some hope.NEWS9: UPDATE 4-Up to 80% of Tokyo Olympics media expected to be vaccinated, say organisers.NEWS10: Brazil's Bolsonaro asks Pfizer to speed up COVID vaccine delivery.
2021-06-16: NEWS1: CureVac Started the Day Worth More Than Novavax. Then Its Vaccine News Hit..NEWS2: Pfizer's rheumatoid arthritis drug shows benefit in COVID-19 pneumonia.NEWS3: Data Published in New England Journal of Medicine Shows Pfizer’s Tofacitinib Meets Primary Endpoint in Brazilian Study in Patients Hospitalized with COVID-19 Pneumonia.NEWS4: Why BioNTech Stock Was Sliding Today.NEWS5: COVID-19 pandemic is ‘far from over in other parts of the world’: Doctor.NEWS6: 10 Best Dividend Stocks to Buy According to Billionaire Richard Chilton.NEWS7: Pfizer Invites Public to View and Listen to Webcast of Pfizer July 28 Conference Call with Analysts.NEWS8: FDA ‘shifting the bar’ for approval with new Alzheimer’s drug: Eli Lilly CEO.NEWS9: Coronavirus vaccine: 'We don’t even realize how lucky we are' in America.NEWS10: Why Pfizer's About to Sell 500 Million COVID Vaccine Doses Without Making a Dime.NEWS11: Chinese media mocks US donation of 80 vaccine vials to Trinidad and Tobago.
2021-06-17: NEWS1: The latest on the Covid-19 pandemic in the U.S..NEWS2: 10 Best Healthcare Stocks to Buy According to Hedge Funds.NEWS3: UPDATE 1-CureVac may let contractors make rival vaccines if own shot fails -CEO.NEWS4: Affordable Care Act survives third Supreme Court challenge.NEWS5: Mayo Clinic, nference AI Analysis Find No Real-World Link Between COVID-19 Shots And Clots.NEWS6: Supreme Court upholds Obamacare in latest ruling.NEWS7: Pfizer Covid-19 Vaccine Could See Blockbuster Sales for Years.NEWS8: Eli Lilly CEO: There will be enough COVID-19 vaccine for 'entire world' by next summer.NEWS9: Pfizer's Xeljanz Cuts Incidence Of Death, Respiratory Failure In COVID-19 Patients, Brazilian Study Shows.NEWS10: UPDATE 2-Denmark to immunize 12-15 year-olds against COVID-19 ahead of winter.NEWS11: By next summer we'll have enough vaccines to vaccinate the world: Eli Lilly CEO.NEWS12: Influencers with Andy Serwer: David Ricks.NEWS13: AstraZeneca Weaker After Australia Limits Covid Shot to People Over 60.NEWS14: Delta variant tests UK guidance on under-40s and the AstraZeneca jab.NEWS15: CureVac’s mRNA vaccine falls short on efficacy in clinical trials.NEWS16: CureVac’s mRNA Covid vaccine falls short on efficacy in clinical trials.
2021-06-18: NEWS1: Pfizer Announces Ramcess Jean-Louis as Global Chief Diversity, Equity And Inclusion Officer.NEWS2: Pfizer CEO Urges Biden to Form Bipartisan Coalition on Drug Costs.NEWS3: Gov. Ducey’s decision to block COVID-19 policies for universities is ‘not based in science’: Doctor.NEWS4: Pharma Stock Roundup: AZN COVID-19 Antibody Cocktail Failure, GSK New Cancer Deal.NEWS5: 12 Words From CureVac's CEO That Could Mean Billions for Moderna and Pfizer.NEWS6: Curevac shares climb 10%; CFO says not giving up on COVID-19 vaccine.NEWS7: How Does Novavax Stack Up Against Today's Vaccine Leaders?.NEWS8: CORRECTED-UPDATE 5-Palestinians cancel deal for near-expired COVID vaccines from Israel.NEWS9: UPDATE 1-S.Korea to mix-and-match COVID-19 vaccine doses for 760,000 people.NEWS10: S.Korea to mix-and-match COVID-19 vaccine doses for 760,000 people.NEWS11: REFILE-New Zealand PM Ardern gets 'pain-free' COVID vaccine shot.

Answer: Rise