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:2019-02-27, Stock:PTR, The news for the past five days is as follows:
2019-02-20: nan
2019-02-21: NEWS1: Shell Is Up 6% in Q1 as Recovering Oil, Markets Come to Its Aid.NEWS2: Pembina Pipeline Corp. (PBA) Ex-Dividend Date Scheduled for February 22, 2019.NEWS3: Pembina Pipeline Corp. (PBA) Ex-Dividend Date Scheduled for February 22, 2019.NEWS4: Market Chatter: Shell, PetroChina Reportedly In Row Over Gas-Sales Pricing At Australian Joint Venture.NEWS5: Market Chatter: Shell, PetroChina Reportedly In Row Over Gas-Sales Pricing At Australian Joint Venture.NEWS6: Shell, PetroChina spat holds up biggest Australian coal seam gas project.NEWS7: Shell, PetroChina spat holds up Australia's biggest coal seam gas project.
2019-02-22: NEWS1: Shell Stock Rises in Q1: Where Will It Be by the Quarter’s End?.
2019-02-25: nan
2019-02-26: NEWS1: Cross Timbers Royalty Trust (CRT) Ex-Dividend Date Scheduled for February 27, 2019.NEWS2: Cross Timbers Royalty Trust (CRT) Ex-Dividend Date Scheduled for February 27, 2019.NEWS3: San Juan Basin Royalty Trust (SJT) Ex-Dividend Date Scheduled for February 27, 2019.NEWS4: San Juan Basin Royalty Trust (SJT) Ex-Dividend Date Scheduled for February 27, 2019.NEWS5: Vermilion Energy Inc. (VET) Ex-Dividend Date Scheduled for February 27, 2019.NEWS6: Vermilion Energy Inc. (VET) Ex-Dividend Date Scheduled for February 27, 2019.NEWS7: Permian Basin Royalty Trust (PBT) Ex-Dividend Date Scheduled for February 27, 2019.NEWS8: Permian Basin Royalty Trust (PBT) Ex-Dividend Date Scheduled for February 27, 2019.NEWS9: PermRock Royalty Trust (PRT) Ex-Dividend Date Scheduled for February 27, 2019.NEWS10: PermRock Royalty Trust (PRT) Ex-Dividend Date Scheduled for February 27, 2019.NEWS11: Mesa Royalty Trust (MTR) Ex-Dividend Date Scheduled for February 27, 2019.NEWS12: Mesa Royalty Trust (MTR) Ex-Dividend Date Scheduled for February 27, 2019.NEWS13: Permianville Royalty Trust (PVL) Ex-Dividend Date Scheduled for February 27, 2019.NEWS14: Permianville Royalty Trust (PVL) Ex-Dividend Date Scheduled for February 27, 2019.NEWS15: Enerplus Corporation (ERF) Ex-Dividend Date Scheduled for February 27, 2019.NEWS16: Enerplus Corporation (ERF) Ex-Dividend Date Scheduled for February 27, 2019.NEWS17: Marine Petroleum Trust (MARPS) Ex-Dividend Date Scheduled for February 27, 2019.NEWS18: Marine Petroleum Trust (MARPS) Ex-Dividend Date Scheduled for February 27, 2019.

Answer: Decrease