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:2018-07-23, Stock:PTR, The news for the past five days is as follows:
2018-07-16: NEWS1: Losing Streak May Continue For China Stock Market.NEWS2: Losing Streak May Continue For China Stock Market.
2018-07-17: NEWS1: China Stock Market May Halt Its Slide On Wednesday.NEWS2: China Stock Market May Halt Its Slide On Wednesday.NEWS3: Asian stocks mostly lower as weak energy shares weigh.
2018-07-18: NEWS1: China Stock Market May Snap Losing Streak.NEWS2: China Stock Market May Snap Losing Streak.
2018-07-19: NEWS1: Asian Markets Mostly Lower.NEWS2: Asian Markets Mostly Lower.NEWS3: Australian Market Rises.NEWS4: Australian Market Rises.NEWS5: China Stock Market May Extend Losing Streak.NEWS6: China Stock Market May Extend Losing Streak.NEWS7: What’s the Pre-Earnings Price Forecast for BP Stock?.NEWS8: Apache Corporation (APA) Ex-Dividend Date Scheduled for July 20, 2018.NEWS9: Apache Corporation (APA) Ex-Dividend Date Scheduled for July 20, 2018.NEWS10: Implied FNI Analyst Target Price: $48.NEWS11: Implied FNI Analyst Target Price: $48.NEWS12: Forecasting ExxonMobil’s Stock Price Up until Its Q2 Release.NEWS13: BRIEF-Sichuan Expressway Enters Into Agreements With PetroChina Yanchang.
2018-07-20: NEWS1: Asian Shares Mostly Higher Despite Trade War Fears.NEWS2: Asian Shares Mostly Higher Despite Trade War Fears.

Answer: Decrease