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:2019-09-18, Stock:PTR, The news for the past five days is as follows:
2019-09-11: NEWS1: China’s Big 3 Struggle To Ramp Up Oil Production.NEWS2: 6 Guru Stocks With Negative Performances.NEWS3: Range Resources Corporation (RRC) Ex-Dividend Date Scheduled for September 12, 2019.NEWS4: Range Resources Corporation (RRC) Ex-Dividend Date Scheduled for September 12, 2019.NEWS5: Evolution Petroleum Corporation, Inc. (EPM) Ex-Dividend Date Scheduled for September 12, 2019.NEWS6: Evolution Petroleum Corporation, Inc. (EPM) Ex-Dividend Date Scheduled for September 12, 2019.NEWS7: Crescent Point Energy Corporation (CPG) Ex-Dividend Date Scheduled for September 12, 2019.NEWS8: Crescent Point Energy Corporation (CPG) Ex-Dividend Date Scheduled for September 12, 2019.NEWS9: Devon Energy Corporation (DVN) Ex-Dividend Date Scheduled for September 12, 2019.NEWS10: Devon Energy Corporation (DVN) Ex-Dividend Date Scheduled for September 12, 2019.NEWS11: Berry Petroleum Corporation (BRY) Ex-Dividend Date Scheduled for September 12, 2019.NEWS12: Berry Petroleum Corporation (BRY) Ex-Dividend Date Scheduled for September 12, 2019.NEWS13: Encana Corporation (ECA) Ex-Dividend Date Scheduled for September 12, 2019.NEWS14: Encana Corporation (ECA) Ex-Dividend Date Scheduled for September 12, 2019.NEWS15: Canadian Natural Resources Limited (CNQ) Ex-Dividend Date Scheduled for September 12, 2019.NEWS16: Canadian Natural Resources Limited (CNQ) Ex-Dividend Date Scheduled for September 12, 2019.NEWS17: Cenovus Energy Inc (CVE) Ex-Dividend Date Scheduled for September 12, 2019.NEWS18: Cenovus Energy Inc (CVE) Ex-Dividend Date Scheduled for September 12, 2019.NEWS19: Chesapeake Utilities Corporation (CPK) Ex-Dividend Date Scheduled for September 12, 2019.NEWS20: Chesapeake Utilities Corporation (CPK) Ex-Dividend Date Scheduled for September 12, 2019.
2019-09-12: NEWS1: Sabine Royalty Trust (SBR) Ex-Dividend Date Scheduled for September 13, 2019.NEWS2: Sabine Royalty Trust (SBR) Ex-Dividend Date Scheduled for September 13, 2019.
2019-09-13: nan
2019-09-16: nan
2019-09-17: NEWS1: New Strong Sell Stocks for September 17th.NEWS2: Saudi Aramco to delay some of PetroChina's October oil loadings - source.

Answer: Rise