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:2018-05-15, Stock:PTR, The news for the past five days is as follows:
2018-05-08: NEWS1: China Stock Market May Spin Its Wheels On Wednesday.NEWS2: China Stock Market May Spin Its Wheels On Wednesday.
2018-05-09: NEWS1: Rebound Predicted For China Stock Market.NEWS2: Rebound Predicted For China Stock Market.NEWS3: Asian ADRs Move Higher in Wednesday Trading.NEWS4: Asian ADRs Move Higher in Wednesday Trading.NEWS5: SandRidge Mississippian Trust I (SDT) Ex-Dividend Date Scheduled for May 10, 2018.NEWS6: SandRidge Mississippian Trust I (SDT) Ex-Dividend Date Scheduled for May 10, 2018.NEWS7: SandRidge Permian Trust (PER) Ex-Dividend Date Scheduled for May 10, 2018.NEWS8: SandRidge Permian Trust (PER) Ex-Dividend Date Scheduled for May 10, 2018.NEWS9: EQT Corporation (EQT) Ex-Dividend Date Scheduled for May 10, 2018.NEWS10: EQT Corporation (EQT) Ex-Dividend Date Scheduled for May 10, 2018.NEWS11: SandRidge Mississippian Trust II (SDR) Ex-Dividend Date Scheduled for May 10, 2018.NEWS12: SandRidge Mississippian Trust II (SDR) Ex-Dividend Date Scheduled for May 10, 2018.
2018-05-10: NEWS1: China Bourse May Test Resistance At 3,200 Points.NEWS2: China Bourse May Test Resistance At 3,200 Points.
2018-05-11: NEWS1: PermRock Royalty Trust (PRT) Ex-Dividend Date Scheduled for May 14, 2018.NEWS2: PermRock Royalty Trust (PRT) Ex-Dividend Date Scheduled for May 14, 2018.NEWS3: Cimarex Energy Co (XEC) Ex-Dividend Date Scheduled for May 14, 2018.NEWS4: Cimarex Energy Co (XEC) Ex-Dividend Date Scheduled for May 14, 2018.NEWS5: Southwest Gas Holdings, Inc. (SWX) Ex-Dividend Date Scheduled for May 14, 2018.NEWS6: Southwest Gas Holdings, Inc. (SWX) Ex-Dividend Date Scheduled for May 14, 2018.NEWS7: Sabine Royalty Trust (SBR) Ex-Dividend Date Scheduled for May 14, 2018.NEWS8: Sabine Royalty Trust (SBR) Ex-Dividend Date Scheduled for May 14, 2018.
2018-05-14: NEWS1: China Bourse May Extend Monday's Gains.NEWS2: China Bourse May Extend Monday's Gains.NEWS3: Marathon Oil Corporation (MRO) Ex-Dividend Date Scheduled for May 15, 2018.NEWS4: Marathon Oil Corporation (MRO) Ex-Dividend Date Scheduled for May 15, 2018.NEWS5: Cabot Oil & Gas Corporation (COG) Ex-Dividend Date Scheduled for May 15, 2018.NEWS6: Cabot Oil & Gas Corporation (COG) Ex-Dividend Date Scheduled for May 15, 2018.NEWS7: MOVES -PetroChina's head of products trading to lead global natgas team.

Answer: Decrease