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:2019-10-23, Stock:PFE, The news for the past five days is as follows:
2019-10-16: NEWS1: Viagra Inventor Raises Funds to Test AI-Generated Treatments.
2019-10-17: NEWS1: Top Stock Reports for Johnson & Johnson, Boeing & Pfizer.NEWS2: Can New Drugs Help Lilly (LLY) to Deliver Solid Q3 Earnings?.NEWS3: PFE vs. NVO: Which Stock Is the Better Value Option?.NEWS4: Fitbit stock gains after company announces biotech partnership.NEWS5: Fitbit's plan to beat Apple in personal health.
2019-10-18: NEWS1: The Zacks Analyst Blog Highlights: Johnson & Johnson, Boeing, Pfizer, Qualcomm and Mitsubishi UFJ Financial.NEWS2: Factors Setting the Tone for Novartis' (NVS) Q3 Earnings.
2019-10-21: NEWS1: Pfizer (PFE) Stock Sinks As Market Gains: What You Should Know.NEWS2: What's in Store for Healthcare ETFs in Q3 Earnings?.NEWS3: What to expect from the landmark opioid trial.NEWS4: Opko and Pfizer announce positive results in late-stage trial of human growth hormone treatment.NEWS5: OPKO and Pfizer Announce Positive Phase 3 Top-Line Results for Somatrogon, an Investigational Long-Acting Human Growth Hormone to Treat Children with Growth Hormone Deficiency.NEWS6: TIMELINE-Popular heartburn medicine Zantac pulled off store shelves.
2019-10-22: NEWS1: Fitbit Stock Needs a Viable Growth Narrative for Q3.

Answer: Rise