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:2020-08-20, Stock:PFE, The news for the past five days is as follows:
2020-08-13: NEWS1: Johnson & Johnson stock underperforms Thursday when compared to competitors.NEWS2: Novavax Stock Jumps on Vaccine Deal With South Korean Firm.NEWS3: Why Warren Buffett Might Not Be Crazy About Biopharma Stocks.NEWS4: US Continues to Secure Coronavirus Vaccines: 4 Stocks to Watch.
2020-08-14: NEWS1: The Economy May Be Struggling, but the Pet Business and the Stock Market Keep Running Strong.NEWS2: Johnson & Johnson stock outperforms market on strong trading day.NEWS3: Merck, Big Pharma’s Quiet Giant, Looks Like a Buy.NEWS4: COVID-19 vaccine maker CureVac pops 200% in debut.NEWS5: CureVac in talks with pharma companies about partnership - Sueddeutsche.NEWS6: FOCUS-Vaccine makers including Moderna must hit U.S. timing goals for full payments.NEWS7: Johnson & Johnson, Novavax ink vaccine deal with UK.NEWS8: Schools struggle to reopen as COVID-19 cases rise.NEWS9: Pfizer Stock Is Treading Water, but Director Ronald Blaylock Made a Big Buy.
2020-08-17: NEWS1: UNC Moves to Online Classes After Coronavirus Outbreak.NEWS2: Johnson & Johnson stock outperforms market on strong trading day.NEWS3: Moscow Exchange to offer trading in U.S. blue chips from Aug. 24.NEWS4: U.S. Tightens Restrictions on Huawei’s Access to Chips.NEWS5: Pelosi Calls House Back Early to Vote on USPS Legislation.NEWS6: Covid-19 Vaccine Push Lacks a Key Ingredient: Trust.
2020-08-18: NEWS1: Johnson & Johnson stock outperforms market on strong trading day.NEWS2: EXPLAINER-World Health Organization's struggle for a global COVID-19 vaccine plan.NEWS3: Healthcare stocks are where you’ll see continued growth: strategist.NEWS4: Vaccines Use Bizarre Stuff. We Need a Supply Chain Now..NEWS5: CORRECTED-China Sinopharm chief rules out high price for coronavirus vaccine.
2020-08-19: NEWS1: Johnson & Johnson stock outperforms market on strong trading day.NEWS2: BioMarin Stock Slumps After FDA’s Surprise Rejection of a Hemophilia Gene Therapy.NEWS3: Potential Gilead Blockbusters Were Rejected By the FDA. Why That’s the ‘Near-Worst-Case Scenario’ for the Stock..NEWS4: German institute says coronavirus vaccinations could start in early 2021.

Answer: Rise