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:2020-09-08, Stock:PTR, The news for the past five days is as follows:
2020-08-31: NEWS1: Chinese And Saudi Oil Giants Book Mammoth Losses.NEWS2: Norway fund excludes firms over human rights violation risk.NEWS3: Norway wealth fund excludes three firms for alleged human right violations.
2020-09-01: NEWS1: Ovintiv ends Duvernay shale joint venture with PetroChina.
2020-09-02: NEWS1: PetroChina (PTR) Incurs H1 Loss, Vows to Boost Clean Energy.
2020-09-03: NEWS1: Ovintiv (OVV) Terminates Duvernay Asset JV With PetroChina.
2020-09-04: nan

Answer: Decrease