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:2019-06-12, Stock:PTR, The news for the past five days is as follows:
2019-06-05: nan
2019-06-06: NEWS1: Occidental Petroleum Corporation (OXY) Ex-Dividend Date Scheduled for June 07, 2019.NEWS2: Occidental Petroleum Corporation (OXY) Ex-Dividend Date Scheduled for June 07, 2019.NEWS3: Total S.A. (TOT) Ex-Dividend Date Scheduled for June 07, 2019.NEWS4: Total S.A. (TOT) Ex-Dividend Date Scheduled for June 07, 2019.
2019-06-07: NEWS1: Nabors Industries Ltd. (NBR) Ex-Dividend Date Scheduled for June 10, 2019.NEWS2: Nabors Industries Ltd. (NBR) Ex-Dividend Date Scheduled for June 10, 2019.
2019-06-10: NEWS1: Anadarko Petroleum Corporation (APC) Ex-Dividend Date Scheduled for June 11, 2019.NEWS2: Anadarko Petroleum Corporation (APC) Ex-Dividend Date Scheduled for June 11, 2019.
2019-06-11: nan

Answer: Decrease