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:2018-12-31, Stock:NVS, The news for the past five days is as follows:
2018-12-21: NEWS1: Novartis Enters Oversold Territory (NVS).NEWS2: Novartis Enters Oversold Territory (NVS).NEWS3: Why Gene Therapy Is More Cost Effective Than Biogen's Approved Drug.NEWS4: Pfizer and GlaxoSmithKline’s Joint Venture: What to Expect.NEWS5: Novartis (NVS) Offers to Buy French Gene Therapy Manufacturer.NEWS6: Novartis (NVS) Offers to Buy French Gene Therapy Manufacturer.NEWS7: Pre-Market Most Active for Dec 21, 2018 :  NVS, AFL, NBR, GNW, AMD, SQQQ, TQQQ, KBR, QQQ, FOXA, NIO, VOD.NEWS8: Pre-Market Most Active for Dec 21, 2018 :  NVS, AFL, NBR, GNW, AMD, SQQQ, TQQQ, KBR, QQQ, FOXA, NIO, VOD.NEWS9: Novartis (NVS) Offers to Buy French Gene Therapy Manufacturer.NEWS10: U.S body says gene therapy may be more cost effective for spinal muscular atrophy.NEWS11: U.S body says gene therapy may be more cost effective for spinal muscular atrophy.
2018-12-24: NEWS1: How Pfizer’s Sutent and Xalkori Have Performed.NEWS2: This Drug Is Expected to Be a Significant Driver for Pfizer.NEWS3: Jazz (JAZZ) Falls as Sleep Drug Gets Extended Review From FDA.NEWS4: Jazz (JAZZ) Falls as Sleep Drug Gets Extended Review From FDA.NEWS5: Jazz (JAZZ) Falls as Sleep Drug Gets Extended Review From FDA.
2018-12-26: nan
2018-12-27: NEWS1: Teva Stock Rises on Patent Settlement With Neos Therapeutics.NEWS2: Teva Stock Rises on Patent Settlement With Neos Therapeutics.NEWS3: Teva Stock Rises on Patent Settlement With Neos Therapeutics.NEWS4: Forget J&J, Buy These 3 Big Drug Stocks Instead in 2019.NEWS5: Forget J&J, Buy These 3 Big Drug Stocks Instead in 2019.NEWS6: Forget J&J, Buy These 3 Big Drug Stocks Instead in 2019.
2018-12-28: NEWS1: Conatus (CNAT) Focuses on Developing NASH Candidate Emricasan.

Answer: Rise