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:2018-09-21, Stock:SNP, The news for the past five days is as follows:
2018-09-14: nan
2018-09-17: NEWS1: More Pain Predicted For Hong Kong Stock Market.NEWS2: More Pain Predicted For Hong Kong Stock Market.NEWS3: Losing Streak Likely To Continue For China Shares.NEWS4: Losing Streak Likely To Continue For China Shares.NEWS5: Sinopec's New Refinery in Alberta to Help Local Producers.NEWS6: Sinopec's New Refinery in Alberta to Help Local Producers.NEWS7: Sinopec&apos;s New Refinery in Alberta to Help Local Producers.
2018-09-18: NEWS1: Hong Kong Bourse May Add To Its Winnings.NEWS2: Hong Kong Bourse May Add To Its Winnings.NEWS3: China Stock Market Draws Firm Lead For Wednesday.NEWS4: China Stock Market Draws Firm Lead For Wednesday.
2018-09-19: NEWS1: Higher Open Predicted For Hong Kong Stock Market.NEWS2: Higher Open Predicted For Hong Kong Stock Market.NEWS3: China Shares May See Continued Support.NEWS4: China Shares May See Continued Support.
2018-09-20: NEWS1: Additional Support Seen For Hong Kong Stock Market.NEWS2: Additional Support Seen For Hong Kong Stock Market.NEWS3: Renewed Support Expected For China Bourse.NEWS4: Renewed Support Expected For China Bourse.

Answer: Decrease