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:2021-10-29, Stock:PTR, The news for the past five days is as follows:
2021-10-22: nan
2021-10-25: NEWS1: Stocks Gain Before Earnings; Oil Drops From High: Markets Wrap.
2021-10-26: nan
2021-10-27: NEWS1: Top Analyst Reports for JPMorgan, Shopify & PetroChina.NEWS2: New Strong Buy Stocks for October 27th.
2021-10-28: NEWS1: PetroChina Recorded Net Profit Over RMB75 Billion in the First Three Quarters of 2021, an Increase of 646.3% YoY.NEWS2: The Zacks Analyst Blog Highlights: JPMorgan, Shopify, PetroChina, Union Pacific, and Moderna.

Answer: Decrease