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:2018-02-21, Stock:BRK-A, The news for the past five days is as follows:
2018-02-13: nan
2018-02-14: NEWS1: Berkshire Hathaway Inc. Stock Is a Screaming Buy on Every Dip.NEWS2: Berkshire Hathaway Inc. Stock Is a Screaming Buy on Every Dip.NEWS3: Phillips 66 Repurchases 35M Shares From Berkshire Hathaway.NEWS4: Phillips 66 Repurchases 35M Shares From Berkshire Hathaway.NEWS5: Phillips 66 OKs $3.3 Bln Share Buyback from Berkshire Hathaway.NEWS6: Phillips 66 OKs $3.3 Bln Share Buyback from Berkshire Hathaway.
2018-02-15: NEWS1: Wells Fargo Gains Amid Government Backlash, Berkshire Backing.NEWS2: Wells Fargo Gains Amid Government Backlash, Berkshire Backing.
2018-02-16: NEWS1: Stocks Warren Buffett Is Buying and Selling Now.NEWS2: Stocks Warren Buffett Is Buying and Selling Now.
2018-02-20: nan

Answer: Decrease