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:2018-03-19, Stock:PTR, The news for the past five days is as follows:
2018-03-12: NEWS1: China Shares May Run Out Of Steam On Tuesday.NEWS2: China Shares May Run Out Of Steam On Tuesday.NEWS3: At $232 Billion, World's 3rd-Largest Oil Major Looks Dirt Cheap.NEWS4: Zacks.com highlights: ArcBest, Cabot, Avianca Holdings, PetroChina and Finish Line.NEWS5: Zacks.com highlights: ArcBest, Cabot, Avianca Holdings, PetroChina and Finish Line.
2018-03-13: NEWS1: China Shares May Take Further Damage On Wednesday.NEWS2: China Shares May Take Further Damage On Wednesday.NEWS3: Evolution Petroleum Corporation, Inc. (EPM) Ex-Dividend Date Scheduled for March 14, 2018.NEWS4: Evolution Petroleum Corporation, Inc. (EPM) Ex-Dividend Date Scheduled for March 14, 2018.NEWS5: Devon Energy Corporation (DVN) Ex-Dividend Date Scheduled for March 14, 2018.NEWS6: Devon Energy Corporation (DVN) Ex-Dividend Date Scheduled for March 14, 2018.NEWS7: Sabine Royalty Trust (SBR) Ex-Dividend Date Scheduled for March 14, 2018.NEWS8: Sabine Royalty Trust (SBR) Ex-Dividend Date Scheduled for March 14, 2018.NEWS9: Encana Corporation (ECA) Ex-Dividend Date Scheduled for March 14, 2018.NEWS10: Encana Corporation (ECA) Ex-Dividend Date Scheduled for March 14, 2018.NEWS11: Sasol Ltd. (SSL) Ex-Dividend Date Scheduled for March 14, 2018.NEWS12: Sasol Ltd. (SSL) Ex-Dividend Date Scheduled for March 14, 2018.NEWS13: Cenovus Energy Inc (CVE) Ex-Dividend Date Scheduled for March 14, 2018.NEWS14: Cenovus Energy Inc (CVE) Ex-Dividend Date Scheduled for March 14, 2018.NEWS15: Chesapeake Utilities Corporation (CPK) Ex-Dividend Date Scheduled for March 14, 2018.NEWS16: Chesapeake Utilities Corporation (CPK) Ex-Dividend Date Scheduled for March 14, 2018.
2018-03-14: NEWS1: The Oil Giant That Investors Ignore.NEWS2: Soft Start Seen For China Stock Market.NEWS3: Soft Start Seen For China Stock Market.NEWS4: Canadian Natural Resources Limited (CNQ) Ex-Dividend Date Scheduled for March 15, 2018.NEWS5: Canadian Natural Resources Limited (CNQ) Ex-Dividend Date Scheduled for March 15, 2018.NEWS6: Range Resources Corporation (RRC) Ex-Dividend Date Scheduled for March 15, 2018.NEWS7: Range Resources Corporation (RRC) Ex-Dividend Date Scheduled for March 15, 2018.
2018-03-15: NEWS1: China Stock Market May Be Stuck In Neutral.NEWS2: China Stock Market May Be Stuck In Neutral.
2018-03-16: nan

Answer: Decrease