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:2021-06-23, Stock:PTR, The news for the past five days is as follows:
2021-06-16: NEWS1: What Makes PetroChina (PTR) a New Strong Buy Stock.NEWS2: Is PetroChina (PTR) a Great Value Stock Right Now?.NEWS3: Top Ranked Value Stocks to Buy for June 16th.NEWS4: Top Ranked Momentum Stocks to Buy for June 16th.
2021-06-17: nan
2021-06-18: NEWS1: 4 Stocks With High Net Income Ratio to Scoop Up.
2021-06-21: NEWS1: Top Ranked Growth Stocks to Buy for June 21st.
2021-06-22: NEWS1: PetroChina Rides Oil Surge to Become Hong Kong’s Top Stock.

Answer: Rise