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:2018-11-23, Stock:PTR, The news for the past five days is as follows:
2018-11-15: NEWS1: Chesapeake Granite Wash Trust (CHKR) Ex-Dividend Date Scheduled for November 16, 2018.NEWS2: Chesapeake Granite Wash Trust (CHKR) Ex-Dividend Date Scheduled for November 16, 2018.NEWS3: Diamondback Energy, Inc. (FANG) Ex-Dividend Date Scheduled for November 16, 2018.NEWS4: Diamondback Energy, Inc. (FANG) Ex-Dividend Date Scheduled for November 16, 2018.
2018-11-16: NEWS1: Sanchez Midstream Partners LP (SNMP) Ex-Dividend Date Scheduled for November 19, 2018.NEWS2: Sanchez Midstream Partners LP (SNMP) Ex-Dividend Date Scheduled for November 19, 2018.NEWS3: The Zacks Analyst Blog Highlights: PetroChina, NextEra, Eni, Dr Pepper and Regeneron.
2018-11-19: NEWS1: China Stock Market Tipped To Halt Winning Streak.NEWS2: China Stock Market Tipped To Halt Winning Streak.NEWS3: Marathon Oil Corporation (MRO) Ex-Dividend Date Scheduled for November 20, 2018.NEWS4: Marathon Oil Corporation (MRO) Ex-Dividend Date Scheduled for November 20, 2018.NEWS5: ECA Marcellus Trust I (ECT) Ex-Dividend Date Scheduled for November 20, 2018.NEWS6: ECA Marcellus Trust I (ECT) Ex-Dividend Date Scheduled for November 20, 2018.NEWS7: Panhandle Royalty Company (PHX) Ex-Dividend Date Scheduled for November 20, 2018.NEWS8: Panhandle Royalty Company (PHX) Ex-Dividend Date Scheduled for November 20, 2018.
2018-11-20: NEWS1: More Pain Predicted For China Stock Market.NEWS2: More Pain Predicted For China Stock Market.NEWS3: Pembina Pipeline Corp. (PBA) Ex-Dividend Date Scheduled for November 21, 2018.NEWS4: Pembina Pipeline Corp. (PBA) Ex-Dividend Date Scheduled for November 21, 2018.
2018-11-21: NEWS1: China Stock Market May Add To Its Winnings.NEWS2: China Stock Market May Add To Its Winnings.NEWS3: Petroleo Brasileiro S.A.- Petrobras (PBR) Ex-Dividend Date Scheduled for November 23, 2018.NEWS4: Petroleo Brasileiro S.A.- Petrobras (PBR) Ex-Dividend Date Scheduled for November 23, 2018.

Answer: Decrease