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:2021-10-15, Stock:PFE, The news for the past five days is as follows:
2021-10-08: NEWS1: Southwest Airlines, Facebook, Pfizer: Stocks That Defined the Week.NEWS2: Italy widens COVID-19 vaccine booster campaign to frail and over 60s.NEWS3: U.S. administers more than 400 mln doses of COVID-19 vaccines - CDC.NEWS4: Studies claim Pfizer vaccine is less effective after a few months.NEWS5: UPDATE 1-U.S. CDC advisers to review Moderna, J&J COVID-19 booster shots this month.NEWS6: Covid-19 Vaccine Boosters Are Outpacing First Doses. What Vaccine Stocks Are Doing..NEWS7: Covid-19 Vaccine Boosters Now Outpace First Doses, CDC Data Show.NEWS8: The Zacks Analyst Blog Highlights: Pfizer, American Tower Corp, Intuitive Surgical, Fidelity National Information Services and FedEx.NEWS9: Finland joins other Nordic nations in curbing Moderna shots.NEWS10: Is Principal U.S. MegaCap ETF (USMC) a Strong ETF Right Now?.NEWS11: UPDATE 1-Denmark says Moderna vaccine remains available to under-18s.NEWS12: 10 Best Big Pharma Stocks to Buy Now.NEWS13: Tesla, Quidel, Chubb Rise Premarket; Allogene Tumbles.NEWS14: COVID Update: Vaccine Booster Shots, Alternate Treatments Wrap Up.NEWS15: REFILE-Malaysia approves Pfizer-BioNTech vaccine for booster dose.NEWS16: UPDATE 1-Japan secures 120 mln more Pfizer COVID-19 vaccine doses for next year.NEWS17: Brazil in talks to buy up to 150 mln Pfizer COVID-19 vaccines for 2022.
2021-10-11: NEWS1: International SOS SVP details where doctors have been needed most.NEWS2: Pfizer (PFE) Dips More Than Broader Markets: What You Should Know.NEWS3: Pfizer-BioNTech Covid-19 Vaccine Is World’s Preferred Shot.NEWS4: Coronavirus: Doctor quotes Yogi Berra to urge everyone to 'let the data sort itself out'.NEWS5: Pfizer (PFE) is a Top-Ranked Growth Stock: Should You Buy?.NEWS6: Merck seeks emergency authorization for COVID pill.NEWS7: 4 Key Things Investors Should Know About Pfizer's Experimental COVID-19 Pill.
2021-10-12: NEWS1: Breaking down the legality of workplace vaccine mandates.NEWS2: eMed CEO discusses what's next for COVID-19 testing.NEWS3: U.S. administers 403.6 mln doses of COVID-19 vaccines - CDC.NEWS4: FDA Staff Don’t Take Position on Moderna Covid-19 Booster.NEWS5: Pushing back on businesses’ ability to have a vaccine mandate is a bad idea: Doctor.NEWS6: An FDA committee will discuss Moderna boosters. Here's what to expect.NEWS7: FDA Scientists Decline to Take Stance on Moderna Covid Booster Shot.NEWS8: FDA working to authorize booster shots of Moderna and J&J vaccines.NEWS9: Sanofi’s Covid Vaccine Inches Closer to the Market, Analyst Says.NEWS10: Sanofi’s Covid-19 Vaccine Gets a Boost From Early Testing Data, Analyst Says.NEWS11: Pre-Markets Back to Green Ahead of Economic & Earnings Data.NEWS12: UPDATE 2-GSK says on course to demerge consumer arm after report of buyout interest.NEWS13: GSK on track with consumer split as buyout report boosts shares.NEWS14: How Could Pfizer Be Affected by Moderna's Vaccine Safety Issues?.NEWS15: Where the S&P and Nasdaq Stand, The New Green Team, Trading Southwest and Pfizer.NEWS16: FDA Advisory Panel Will Debate J&J and Moderna Boosters This Week.
2021-10-13: NEWS1: UPDATE 1-Australia's CSL reaffirms commitment to making AstraZeneca COVID vaccine.NEWS2: UPDATE 2-J&J COVID-19 shot gets better boost from Moderna or Pfizer in NIH study.NEWS3: U.S. administers 404.4 mln doses of COVID-19 vaccines - CDC.NEWS4: 'Mixing' COVID-19 vaccines triggers a stronger immune response, preliminary NIH study says.NEWS5: Johnson & Johnson Booster Shot May Bolster Immune Response, FDA Staff Says.NEWS6: U.S. to open Canada, Mexico borders for vaccinated visitors.NEWS7: UPDATE 1-Russia says Sputnik Light is 70% effective against Delta variant.NEWS8: Merck’s Covid-19 Antiviral Can Still Get FDA Authorization, Despite Safety Concerns, Analyst Says.NEWS9: Russia's one-shot Sputnik Light vaccine 70% effective against Delta variant - RDIF.NEWS10: J&J Gains as FDA Says Its Covid Booster Shot Helps Immunity.NEWS11: An FDA Advisory Panel Will Debate Moderna and J&J Boosters This Week.NEWS12: Can Pfizer Beat Moderna in mRNA Vaccines?.NEWS13: Should Invesco S&P Ultra Dividend Revenue ETF (RDIV) Be on Your Investing Radar?.NEWS14: As Kids' Covid-19 Vaccine Nears, Doctors Work to Ease Parent Concerns.NEWS15: Panama approves Pfizer COVID-19 booster for high-risk people.
2021-10-14: NEWS1: U.S. administers 405.4 mln doses of COVID-19 vaccines - CDC.NEWS2: Why Moderna Stock Trounced the Market Today.NEWS3: Moderna Booster Is Recommended by FDA Advisory Panel. Here’s Who Can Get Another Shot..NEWS4: Moderna Booster Shot Backed by FDA Advisory Panel.NEWS5: Doctor: Just a 'matter of time' before another COVID-19 surge.NEWS6: Column: Moderna's founders are now billionaires, but where are the doses for the rest of the world?.NEWS7: Moderna Stock Pops After FDA Panel Unanimously Endorses Covid Booster.NEWS8: Kyrie Irving won't play for the Brooklyn Nets until vaccinated.NEWS9: FDA panel endorses a lower dose of Moderna’s COVID-19 vaccine for booster shot.NEWS10: Doctor on Covid-19: ‘Let history guide our future actions’.NEWS11: Lack of US COVID-19 data is 'red meat' for anti-vaccine movement: Expert.NEWS12: Moderna Stock Jumps After FDA Advisors Recommend Booster Shot.NEWS13: Has Pfizer (PFE) Outpaced Other Medical Stocks This Year?.NEWS14: UPDATE 5-U.S. FDA advisers back Moderna COVID-19 booster shots for older and high-risk people.NEWS15: Epizyme's (EPZM) Tazverik Aids Growth, Overdependence a Woe.NEWS16: 2 Stocks to Consider if Pfizer's and Moderna's CEOs Are Right That the Pandemic Could End Next Year.NEWS17: Scientist behind Vertex CF drugs launches new startup with Atlas Venture.NEWS18: Pfizer Just Scored Another Key Regulatory Approval.NEWS19: The FDA Is Set to Decide on Moderna's Booster. Here's What It Means for the Stock..NEWS20: ‘I am for’ a national vaccine mandate: Stanley McChrystal.NEWS21: Australia's CSL reaffirms commitment to making AstraZeneca COVID vaccine.

Answer: Decrease