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:2018-08-20, Stock:PTR, The news for the past five days is as follows:
2018-08-13: NEWS1: China Stock Market May Extend Monday's Losses.NEWS2: China Stock Market May Extend Monday's Losses.NEWS3: Energy Sector Update for 08/13/2018: NAO,LNG,RDS.A,RDS.B,PTR.NEWS4: Energy Sector Update for 08/13/2018: NAO,LNG,RDS.A,RDS.B,PTR.NEWS5: Energy Sector Update for 08/13/2018: LNG,RDS.A,RDS.B,PTR.NEWS6: Energy Sector Update for 08/13/2018: LNG,RDS.A,RDS.B,PTR.NEWS7: Sabine Royalty Trust (SBR) Ex-Dividend Date Scheduled for August 14, 2018.NEWS8: Sabine Royalty Trust (SBR) Ex-Dividend Date Scheduled for August 14, 2018.NEWS9: Cimarex Energy Co (XEC) Ex-Dividend Date Scheduled for August 14, 2018.NEWS10: Cimarex Energy Co (XEC) Ex-Dividend Date Scheduled for August 14, 2018.NEWS11: Southwest Gas Holdings, Inc. (SWX) Ex-Dividend Date Scheduled for August 14, 2018.NEWS12: Southwest Gas Holdings, Inc. (SWX) Ex-Dividend Date Scheduled for August 14, 2018.NEWS13: Petroleo Brasileiro S.A.- Petrobras (PBR) Ex-Dividend Date Scheduled for August 14, 2018.NEWS14: Petroleo Brasileiro S.A.- Petrobras (PBR) Ex-Dividend Date Scheduled for August 14, 2018.NEWS15: Marathon Oil Corporation (MRO) Ex-Dividend Date Scheduled for August 14, 2018.NEWS16: Marathon Oil Corporation (MRO) Ex-Dividend Date Scheduled for August 14, 2018.NEWS17: Energy Sector Update for 08/13/2018: USO, UNG, PTR, LNG, RDS.A, RDS.B.NEWS18: Energy Sector Update for 08/13/2018: USO, UNG, PTR, LNG, RDS.A, RDS.B.NEWS19: PetroChina Considers Halting Purchases of U.S. LNG Amid Trade War.NEWS20: Asian Markets Tumble Amid Turkish Currency Crisis.NEWS21: PetroChina Is Said to Mull Temporary Halt of U.S. LNG Purchases.NEWS22: PetroChina Is Said to Mull Temporary Halt of U.S. LNG Purchases.NEWS23: PetroChina Is Said to Mull Temporary Halt of U.S. LNG Purchases.NEWS24: PetroChina Mulls Suspending US LNG Purchases.
2018-08-14: NEWS1: China Stock Market May Stop The Bleeding On Wednesday.NEWS2: China Stock Market May Stop The Bleeding On Wednesday.NEWS3: Oasis Midstream Partners LP (OMP) Ex-Dividend Date Scheduled for August 15, 2018.NEWS4: Oasis Midstream Partners LP (OMP) Ex-Dividend Date Scheduled for August 15, 2018.NEWS5: Seadrill Partners LLC (SDLP) Ex-Dividend Date Scheduled for August 15, 2018.NEWS6: Seadrill Partners LLC (SDLP) Ex-Dividend Date Scheduled for August 15, 2018.NEWS7: Black Stone Minerals, L.P. (BSM) Ex-Dividend Date Scheduled for August 15, 2018.NEWS8: Black Stone Minerals, L.P. (BSM) Ex-Dividend Date Scheduled for August 15, 2018.NEWS9: Exclusive - China's Sinochem to transfer WEPEC refinery stake to PetroChina, seeks trader role: sources.
2018-08-15: NEWS1: Oil & Gas - International Integrated Outlook: Prospects Bleak.NEWS2: Oil & Gas - International Integrated Outlook: Prospects Bleak.NEWS3: Soft Start Tipped For China Stock Market.NEWS4: Soft Start Tipped For China Stock Market.NEWS5: Helmerich & Payne, Inc. (HP) Ex-Dividend Date Scheduled for August 16, 2018.NEWS6: Helmerich & Payne, Inc. (HP) Ex-Dividend Date Scheduled for August 16, 2018.NEWS7: North European Oil Royality Trust (NRT) Ex-Dividend Date Scheduled for August 16, 2018.NEWS8: North European Oil Royality Trust (NRT) Ex-Dividend Date Scheduled for August 16, 2018.
2018-08-16: NEWS1: China Shares May Stop The Bleeding On Friday.NEWS2: China Shares May Stop The Bleeding On Friday.NEWS3: Chesapeake Granite Wash Trust (CHKR) Ex-Dividend Date Scheduled for August 17, 2018.NEWS4: Chesapeake Granite Wash Trust (CHKR) Ex-Dividend Date Scheduled for August 17, 2018.NEWS5: Diamondback Energy, Inc. (FANG) Ex-Dividend Date Scheduled for August 17, 2018.NEWS6: Diamondback Energy, Inc. (FANG) Ex-Dividend Date Scheduled for August 17, 2018.
2018-08-17: NEWS1: ECA Marcellus Trust I (ECT) Ex-Dividend Date Scheduled for August 20, 2018.NEWS2: ECA Marcellus Trust I (ECT) Ex-Dividend Date Scheduled for August 20, 2018.NEWS3: Sanchez Midstream Partners LP (SNMP) Ex-Dividend Date Scheduled for August 20, 2018.NEWS4: Sanchez Midstream Partners LP (SNMP) Ex-Dividend Date Scheduled for August 20, 2018.NEWS5: BP Stock: Analysts Are Mostly on the Fence.

Answer: Rise