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:2018-12-28, Stock:PTR, The news for the past five days is as follows:
2018-12-20: NEWS1: PetroChina is Now Oversold (PTR).NEWS2: PetroChina is Now Oversold (PTR).NEWS3: Has BP’s Short Interest Risen?.NEWS4: Do Hedge Funds Love PetroChina Company Limited (PTR)?.
2018-12-21: NEWS1: BP Trades above the Peer Average.
2018-12-24: nan
2018-12-26: NEWS1: China Stock Market May Find Traction On Thursday.NEWS2: China Stock Market May Find Traction On Thursday.NEWS3: Enerplus Corporation (ERF) Ex-Dividend Date Scheduled for December 27, 2018.NEWS4: Enerplus Corporation (ERF) Ex-Dividend Date Scheduled for December 27, 2018.
2018-12-27: NEWS1: Energy Sector Update for 12/27/2018: REI,CG,SNP,XOM,PTR.NEWS2: Energy Sector Update for 12/27/2018: REI,CG,SNP,XOM,PTR.NEWS3: China Stock Market May Halt Losing Streak.NEWS4: China Stock Market May Halt Losing Streak.NEWS5: Energy Sector Update for 12/27/2018: SNP,XOM,PTR.NEWS6: Energy Sector Update for 12/27/2018: SNP,XOM,PTR.NEWS7: Energy Sector Update for 12/27/2018: SNP, XOM, PTR, CVX, COP, SLB, OXY.NEWS8: Energy Sector Update for 12/27/2018: SNP, XOM, PTR, CVX, COP, SLB, OXY.NEWS9: Vermilion Energy Inc. (VET) Ex-Dividend Date Scheduled for December 28, 2018.NEWS10: Vermilion Energy Inc. (VET) Ex-Dividend Date Scheduled for December 28, 2018.NEWS11: San Juan Basin Royalty Trust (SJT) Ex-Dividend Date Scheduled for December 28, 2018.NEWS12: San Juan Basin Royalty Trust (SJT) Ex-Dividend Date Scheduled for December 28, 2018.NEWS13: Cross Timbers Royalty Trust (CRT) Ex-Dividend Date Scheduled for December 28, 2018.NEWS14: Cross Timbers Royalty Trust (CRT) Ex-Dividend Date Scheduled for December 28, 2018.NEWS15: PermRock Royalty Trust (PRT) Ex-Dividend Date Scheduled for December 28, 2018.NEWS16: PermRock Royalty Trust (PRT) Ex-Dividend Date Scheduled for December 28, 2018.NEWS17: Permian Basin Royalty Trust (PBT) Ex-Dividend Date Scheduled for December 28, 2018.NEWS18: Permian Basin Royalty Trust (PBT) Ex-Dividend Date Scheduled for December 28, 2018.NEWS19: Pembina Pipeline Corp. (PBA) Ex-Dividend Date Scheduled for December 28, 2018.NEWS20: Pembina Pipeline Corp. (PBA) Ex-Dividend Date Scheduled for December 28, 2018.NEWS21: Mesa Royalty Trust (MTR) Ex-Dividend Date Scheduled for December 28, 2018.NEWS22: Mesa Royalty Trust (MTR) Ex-Dividend Date Scheduled for December 28, 2018.NEWS23: BRIEF-Sichuan Expressway To Buy Oil Products From Petrochina's Sichuan Branch.

Answer: Decrease