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:2018-08-28, Stock:PTR, The news for the past five days is as follows:
2018-08-21: NEWS1: China Stock Market May Add To Its Winnings.NEWS2: China Stock Market May Add To Its Winnings.NEWS3: Oil Prices Fall: BP Stock Down 7% in Current Quarter.NEWS4: Panhandle Royalty Company (PHX) Ex-Dividend Date Scheduled for August 22, 2018.NEWS5: Panhandle Royalty Company (PHX) Ex-Dividend Date Scheduled for August 22, 2018.
2018-08-22: NEWS1: China Shares May Extend Wednesday's Losses.NEWS2: China Shares May Extend Wednesday's Losses.NEWS3: Pembina Pipeline Corp. (PBA) Ex-Dividend Date Scheduled for August 23, 2018.NEWS4: Pembina Pipeline Corp. (PBA) Ex-Dividend Date Scheduled for August 23, 2018.
2018-08-23: NEWS1: China Shares May Head South Again On Friday.NEWS2: China Shares May Head South Again On Friday.
2018-08-24: NEWS1: Cnooc Promises More Capex After Profit Surges.
2018-08-27: NEWS1: Win Streak May Continue For China Stock Market.NEWS2: Win Streak May Continue For China Stock Market.NEWS3: PetroChina, Sinopec Need to Significantly Boost Gas Production, Analyst Says.NEWS4: PetroChina, Sinopec Need to Significantly Boost Gas Production, Analyst Says.

Answer: Decrease