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:2021-07-12, Stock:PTR, The news for the past five days is as follows:
2021-07-02: NEWS1: Should Value Investors Buy PetroChina (PTR) Stock?.NEWS2: Sinopec (SNP), PetroChina (PTR) Expect Turnaround in H1 Profit.NEWS3: The Zacks Analyst Blog Highlights: Verizon, SAP, PetroChina, Moderna and General Motors.NEWS4: Zacks.com featured highlights include: Boise Cascade, USA Truck, PetroChina Co, Berry Global Group and MetLife.
2021-07-06: nan
2021-07-07: NEWS1: China’s Oil Industry Is Undergoing A Serious Makeover.
2021-07-08: nan
2021-07-09: nan

Answer: Decrease