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:2018-12-21, Stock:SNP, The news for the past five days is as follows:
2018-12-14: nan
2018-12-17: NEWS1: Losses May Accelerate For Hong Kong Stock Market.NEWS2: Losses May Accelerate For Hong Kong Stock Market.NEWS3: China Stock Market Expected To Open In The Red.NEWS4: China Stock Market Expected To Open In The Red.NEWS5: New Strong Sell Stocks for December 17th.NEWS6: New Strong Sell Stocks for December 17th.NEWS7: Cloudera, China Petrol, Meet Group, Ribbon and AudioEye highlighted as Zacks Bull and Bear of the Day.NEWS8: New Strong Sell Stocks for December 17th.
2018-12-18: NEWS1: Hong Kong Stock Market Poised To Halt Losing Streak.NEWS2: Hong Kong Stock Market Poised To Halt Losing Streak.NEWS3: China Market May Test Resistance At 2,600 Points.NEWS4: China Market May Test Resistance At 2,600 Points.
2018-12-19: NEWS1: Hong Kong Shares May Open Under Pressure On Thursday.NEWS2: Hong Kong Shares May Open Under Pressure On Thursday.NEWS3: China Stock Market May Extend Losing Streak.NEWS4: China Stock Market May Extend Losing Streak.
2018-12-20: nan

Answer: Decrease