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:2018-03-22, Stock:PTR, The news for the past five days is as follows:
2018-03-15: NEWS1: China Stock Market May Be Stuck In Neutral.NEWS2: China Stock Market May Be Stuck In Neutral.
2018-03-16: nan
2018-03-19: NEWS1: Renewed Selling Pressure Tipped For China Bourse.NEWS2: Renewed Selling Pressure Tipped For China Bourse.NEWS3: Shell Stock Slumps: Where Will It Be by March 30?.NEWS4: Shell Stock Slumps: Where Will It Be by March 30?.NEWS5: A Closer Look at Shell’s Moving Averages in 1Q18.NEWS6: A Closer Look at Shell’s Moving Averages in 1Q18.
2018-03-20: NEWS1: China Stocks Tipped To Open In The Green.NEWS2: China Stocks Tipped To Open In The Green.
2018-03-21: NEWS1: Continued Consolidation Called For China Stock Market.NEWS2: Continued Consolidation Called For China Stock Market.NEWS3: UAE's ADNOC awards PetroChina stakes in two offshore concessions.NEWS4: Pembina Pipeline Corp. (PBA) Ex-Dividend Date Scheduled for March 22, 2018.NEWS5: Pembina Pipeline Corp. (PBA) Ex-Dividend Date Scheduled for March 22, 2018.NEWS6: UAE&apos;s ADNOC Awards PetroChina Stakes In Two Offshore Concessions.NEWS7: UAE&apos;s ADNOC Awards PetroChina Stakes In Two Offshore Concessions.

Answer: Decrease