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:2019-05-17, Stock:PTR, The news for the past five days is as follows:
2019-05-10: NEWS1: TOPLive Starts: Follow Developments in U.S.-China Tariffs Spat.
2019-05-13: NEWS1: Sabine Royalty Trust (SBR) Ex-Dividend Date Scheduled for May 14, 2019.NEWS2: Sabine Royalty Trust (SBR) Ex-Dividend Date Scheduled for May 14, 2019.NEWS3: Cimarex Energy Co (XEC) Ex-Dividend Date Scheduled for May 14, 2019.NEWS4: Cimarex Energy Co (XEC) Ex-Dividend Date Scheduled for May 14, 2019.NEWS5: Southwest Gas Holdings, Inc. (SWX) Ex-Dividend Date Scheduled for May 14, 2019.NEWS6: Southwest Gas Holdings, Inc. (SWX) Ex-Dividend Date Scheduled for May 14, 2019.NEWS7: Cabot Oil & Gas Corporation (COG) Ex-Dividend Date Scheduled for May 14, 2019.NEWS8: Cabot Oil & Gas Corporation (COG) Ex-Dividend Date Scheduled for May 14, 2019.NEWS9: Marathon Oil Corporation (MRO) Ex-Dividend Date Scheduled for May 14, 2019.NEWS10: Marathon Oil Corporation (MRO) Ex-Dividend Date Scheduled for May 14, 2019.NEWS11: EQT Corporation (EQT) Ex-Dividend Date Scheduled for May 14, 2019.NEWS12: EQT Corporation (EQT) Ex-Dividend Date Scheduled for May 14, 2019.NEWS13: PetroChina (PTR) Q1 Earnings Edge Up on Upstream Strength.
2019-05-14: NEWS1: Black Stone Minerals, L.P. (BSM) Ex-Dividend Date Scheduled for May 15, 2019.NEWS2: Black Stone Minerals, L.P. (BSM) Ex-Dividend Date Scheduled for May 15, 2019.
2019-05-15: NEWS1: Falcon Minerals Corporation (FLMN) Ex-Dividend Date Scheduled for May 16, 2019.NEWS2: Falcon Minerals Corporation (FLMN) Ex-Dividend Date Scheduled for May 16, 2019.NEWS3: Oasis Midstream Partners LP (OMP) Ex-Dividend Date Scheduled for May 16, 2019.NEWS4: Oasis Midstream Partners LP (OMP) Ex-Dividend Date Scheduled for May 16, 2019.NEWS5: North European Oil Royality Trust (NRT) Ex-Dividend Date Scheduled for May 16, 2019.NEWS6: North European Oil Royality Trust (NRT) Ex-Dividend Date Scheduled for May 16, 2019.
2019-05-16: NEWS1: Chesapeake Granite Wash Trust (CHKR) Ex-Dividend Date Scheduled for May 17, 2019.NEWS2: Chesapeake Granite Wash Trust (CHKR) Ex-Dividend Date Scheduled for May 17, 2019.

Answer: Decrease