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:2021-05-18, Stock:PFE, The news for the past five days is as follows:
2021-05-11: NEWS1: Samsung BioLogics to produce Pfizer's COVID-19 vaccine - report.NEWS2: RPT-Georgia among first U.S. states to provide COVID-19 shots to kids under 16.NEWS3: Georgia among first U.S. states to provide COVID-19 shots to kids under 16.NEWS4: UPDATE 3-Pfizer seeks UK approval for use of COVID-19 vaccine in teenagers.NEWS5: Pfizer and BioNTech's COVID-19 Vaccine Authorized by the FDA for Adolescents.NEWS6: Covid-19 Vaccine Data on Children Under 12 Expected by Late Fall, Officials Say.NEWS7: COVID-19 booster shot is likely and ‘it’s okay’: Doctor.NEWS8: Dr. Fauci: We are 'in a race' between the vaccine and virus.NEWS9: Wall Street Is Changing Its Mind on Covid Vaccine Revenues. It Now Expects Big Sales Next Year..NEWS10: UPDATE 2-Canada's Alberta province halts AstraZeneca vaccine first shots due to supply issue.NEWS11: Is Pfizer Stock A Buy As It Eyes $26 Billion In Full-Year Covid Vaccine Sales?.NEWS12: Can schools require teens to get a COVID-19 vaccine?.NEWS13: FDA Gives Emergency Use Nod to Pfizer/BioNTech COVID-19 Vaccine in Adolescents.NEWS14: Coronavirus tally: Global cases of COVID-19 near 159 million and death toll above 3.3 million.NEWS15: EMA head sees OK for BioNTech vaccine in 12-year-olds potentially in late May.NEWS16: Pfizer and BioNTech Receive First U.S. Authorization for Emergency Use of COVID-19 Vaccine in Adolescents.NEWS17: PRESS DIGEST-British Business - May 11.NEWS18: US drugs regulator authorises Pfizer Covid vaccine for under-16s.
2021-05-12: NEWS1: UPDATE 1-Brazil to halt Sinovac vaccine production as Chinese supplies held up.NEWS2: CDC Recommends Pfizer-BioNTech Covid-19 Vaccine for 12- to 15-Year-Olds.NEWS3: Delaying second COVID-19 vaccine doses can help reduce deaths - study.NEWS4: CDC Panel Recommends Pfizer-BioNTech Covid-19 Vaccine for 12- to 15-Year-Olds.NEWS5: CDC panel endorses Pfizer’s Covid vaccine for use in adolescents.NEWS6: UPDATE 1-Biden urges parents to get kids vaccinated after CDC panel OKs Pfizer vaccine.NEWS7: COVID SCIENCE-mRNA vaccines appear effective vs India variant; people with HIV at higher risk for severe COVID-19.NEWS8: CDC committee recommends that Pfizer's COVID-19 shot be used in 12- to 15-year-olds.NEWS9: 'The biggest risk for Americans right now regarding COVID-19 is what’s happening across the world': Doctor.NEWS10: CDC Advisory Panel To Vote On Pfizer-BioNTech's COVID-19 Vaccine Use In Adolescents Today: CNBC.NEWS11: UPDATE 5-CDC panel clears way to COVID-19 vaccines for U.S. adolescents.NEWS12: UPDATE 1-Pfizer to seek COVID-19 vaccine approval in Mexico for children aged 12-15.NEWS13: UPDATE 1-Swiss aim to re-open economy, donate AstraZeneca COVID-19 shots.NEWS14: Pfizer Rebuffs Report On COVID-19 Vaccine Production In South Korea With Samsung BioLogics: Reuters.NEWS15: Does Pfizer's Latest News Snatch a Big Market Opportunity Away From Moderna?.NEWS16: 2 Best Biotech Stocks to Buy Now.NEWS17: U.S. CDC panel meets on Pfizer COVID-19 vaccine use in adolescents.NEWS18: Why Novavax Could Beat Moderna in Europe After Pfizer's Huge EU Vaccine Deal.NEWS19: In the push for new vaccines, taxpayers keep paying and paying.NEWS20: In the push for new vaccines, taxpayers keep paying and paying.NEWS21: Investors are starting to appreciate the business potential of vaccines.NEWS22: PRESS DIGEST-British Business - May 12.NEWS23: Brazil buys 100 million more doses of Pfizer's COVID-19 vaccine.NEWS24: UPDATE 3-Samsung BioLogics, Pfizer deny report on COVID-19 vaccine production in S.Korea.NEWS25: UPDATE 1-Georgia among first U.S. states to provide COVID-19 shots to kids under 16.
2021-05-13: NEWS1: UPDATE 1-Pfizer got no response to offers to supply vaccine to Brazil last year, exec says.NEWS2: Delayed second Pfizer COVID-19 shot produces more antibodies -study.NEWS3: Top Stock Reports for Mastercard, Home Depot & Walt Disney.NEWS4: CDC approves those fully vaccinated to largely ditch masks indoors.NEWS5: CDC recommends Pfizer vaccine for children 12 to 15 years-old.NEWS6: Pfizer got no response to offers to supply vaccine to Brazil last year, exec says.NEWS7: UK Study Answers Question If Two Doses Of COVID-19 Vaccines Can Be Mix-Matched?.NEWS8: Pfizer (PFE) COVID-19 Vaccine for Adolescents Endorsed by CDC.NEWS9: ‘Vaccine envy is real,’ says a Cleveland Clinic pediatrician. Here’s what she’s telling parents and teens about the COVID-19 vaccine.NEWS10: UAE allows Pfizer COVID-19 dose for emergency use in 12-15 year olds.NEWS11: Global tally of COVID-19 cases tops 160 million as U.S. gears up to vaccinate 12- to 15-year-olds.NEWS12: What the Yankees COVID-19 outbreak proves: no vaccine is 100% effective.NEWS13: CDC Panel Recommends Pfizer’s Covid-19 Vaccine in Younger Teens. What Comes Next..NEWS14: RPT-INSIGHT-Top scientists question the need for COVID-19 booster shots.NEWS15: Mixing Pfizer and AstraZeneca Vaccines Increases Mild Side Effects but Is Safe, Study Shows.NEWS16: CDC Panel Backs Using Pfizer-BioNTech COVID-19 Vaccine For 12-15 Age Group.NEWS17: Mixing Pfizer and AstraZeneca COVID-19 vaccines increases mild side effects but is safe, study shows.NEWS18: Coronavirus tally: Global cases of COVID-19 top 160 million and India nears 24 million cases.NEWS19: INSIGHT-Top scientists question the need for COVID-19 booster shots.NEWS20: Why Wall Street Is Worried About Pfizer Despite Its COVID Vaccine Success.NEWS21: 4 Things About Pfizer That the Smartest Investors Know.NEWS22: Japan vaccine chief blames drug approval system for slow inoculation drive.NEWS23: UPDATE 2-Australia seeks deal with Moderna for domestic production of mRNA vaccines.
2021-05-14: NEWS1: Brazil judge rules ex-health minister can remain silent in COVID inquiry.NEWS2: Doctor: 'I will be wearing masks indoors for the foreseeable future’.NEWS3: COVID-19 vaccinations and mitigation turned the corner on school reopening: AFT President.NEWS4: COVID SCIENCE-Delayed 2nd Pfizer/BioNTech shot boosts antibodies in elderly; COVID-19 obesity risk higher for men.NEWS5: People choosing to ditch their masks will be a ‘gradual process’: Doctor.NEWS6: Delaying second Pfizer COVID-19 shot boosts immune response in over-80s, study finds.NEWS7: Pfizer says 'good reason' to believe in success of anti-viral drug.NEWS8: U.S. Will Send No New J&J Vaccines Doses to States Next Week.NEWS9: Corcept's (CORT) Lead Drug Korlym Aids Growth Amid Competition.NEWS10: Why Pfizer Is Still a Top Stock for 2021.NEWS11: Delaying second Pfizer COVID shot boosts immune response in over-80s, study finds.NEWS12: Why Pfizer Stock Didn't Soar After Its Fantastic Q1 Results.NEWS13: 3 Things About Moderna That The Smartest Investors Know.NEWS14: UPDATE 1-Vietnam seeks 31 mln doses of Pfizer-BioNTech vaccine in 2021.NEWS15: ‘Covid Zero’ Havens Find Reopening Harder Than Taming Virus.NEWS16: PRESS DIGEST- Financial Times - May 14.
2021-05-17: NEWS1: What this Cleveland Clinic pediatrician and vaccine expert is telling teens and their parents about getting COVID-19 shots.NEWS2: Why Kaiser and Mayo Clinic are investing $100 million in Medically Home.NEWS3: CDC to remain vigilant for case spikes after new mask guidance.NEWS4: UPDATE 1-Germany to offer free COVID-19 shots for all adults from June 7.NEWS5: UPDATE 1-Backers of WTO vaccine waiver ask opponents to join talks - document.NEWS6: Reinventing health care in a post-pandemic world.NEWS7: Backers of WTO vaccine waiver ask opponents to join talks - document.NEWS8: Sanofi Executives Say Covid Vaccine Could Be ‘Universal Booster’.NEWS9: UPDATE 2-WHO chief urges COVID-19 vaccine makers to advance doses for COVAX.NEWS10: UPDATE 2-EU regulator backs month-long storage of Pfizer COVID-19 vaccine in fridges.NEWS11: 10 Best Dividend Stocks on Robinhood.NEWS12: CDC: 3 million teens between ages of 12 and 17 have received at least one COVID-19 shot.NEWS13: Pfizer-Bristol Myers' Eliquis Flops In Post-Heart Surgery Trial.NEWS14: Covid-19 Vaccine Works, Even if Side Effects Differ for All, Doctors Say.NEWS15: GSK and Sanofi optimistic about COVID vaccine after phase 2 trials.NEWS16: Sanofi and Glaxo Are Back With a  Covid-19 Vaccine.

Answer: Decrease