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:2019-02-22, Stock:PTR, The news for the past five days is as follows:
2019-02-14: NEWS1: What's the most expensive stock of all time?.NEWS2: Chesapeake Granite Wash Trust (CHKR) Ex-Dividend Date Scheduled for February 15, 2019.NEWS3: Chesapeake Granite Wash Trust (CHKR) Ex-Dividend Date Scheduled for February 15, 2019.NEWS4: Panhandle Royalty Company (PHX) Ex-Dividend Date Scheduled for February 15, 2019.NEWS5: Panhandle Royalty Company (PHX) Ex-Dividend Date Scheduled for February 15, 2019.NEWS6: Viper Energy Partners LP (VNOM) Ex-Dividend Date Scheduled for February 15, 2019.NEWS7: Viper Energy Partners LP (VNOM) Ex-Dividend Date Scheduled for February 15, 2019.NEWS8: Black Stone Minerals, L.P. (BSM) Ex-Dividend Date Scheduled for February 15, 2019.NEWS9: Black Stone Minerals, L.P. (BSM) Ex-Dividend Date Scheduled for February 15, 2019.NEWS10: Global Oil Prices Turn Topsy-Turvy as Scorned Crudes Become Dear.
2019-02-15: NEWS1: Sanchez Midstream Partners LP (SNMP) Ex-Dividend Date Scheduled for February 19, 2019.NEWS2: Sanchez Midstream Partners LP (SNMP) Ex-Dividend Date Scheduled for February 19, 2019.NEWS3: Marathon Oil Corporation (MRO) Ex-Dividend Date Scheduled for February 19, 2019.NEWS4: Marathon Oil Corporation (MRO) Ex-Dividend Date Scheduled for February 19, 2019.
2019-02-19: NEWS1: Morgan Stanley: New Oil Discovery Could Spur China’s Shale Boom.NEWS2: Falcon Minerals Corporation (FLMN) Ex-Dividend Date Scheduled for February 20, 2019.NEWS3: Falcon Minerals Corporation (FLMN) Ex-Dividend Date Scheduled for February 20, 2019.NEWS4: ECA Marcellus Trust I (ECT) Ex-Dividend Date Scheduled for February 20, 2019.NEWS5: ECA Marcellus Trust I (ECT) Ex-Dividend Date Scheduled for February 20, 2019.NEWS6: Diamondback Energy, Inc. (FANG) Ex-Dividend Date Scheduled for February 20, 2019.NEWS7: Diamondback Energy, Inc. (FANG) Ex-Dividend Date Scheduled for February 20, 2019.
2019-02-20: nan
2019-02-21: NEWS1: Shell Is Up 6% in Q1 as Recovering Oil, Markets Come to Its Aid.NEWS2: Pembina Pipeline Corp. (PBA) Ex-Dividend Date Scheduled for February 22, 2019.NEWS3: Pembina Pipeline Corp. (PBA) Ex-Dividend Date Scheduled for February 22, 2019.NEWS4: Market Chatter: Shell, PetroChina Reportedly In Row Over Gas-Sales Pricing At Australian Joint Venture.NEWS5: Market Chatter: Shell, PetroChina Reportedly In Row Over Gas-Sales Pricing At Australian Joint Venture.NEWS6: Shell, PetroChina spat holds up biggest Australian coal seam gas project.NEWS7: Shell, PetroChina spat holds up Australia's biggest coal seam gas project.

Answer: Rise