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:2018-07-19, Stock:BRK-A, The news for the past five days is as follows:
2018-07-12: nan
2018-07-13: nan
2018-07-16: NEWS1: Berkshire Hathaway Chairman Gives Away About 17.7 Mln Class B Shares to Five Foundations.NEWS2: Berkshire Hathaway Chairman Gives Away About 17.7 Mln Class B Shares to Five Foundations.
2018-07-17: nan
2018-07-18: NEWS1: Berkshire Hathaway Shares Jump in Early Trading as Repurchase Program Makes Stock Attractive.NEWS2: Berkshire Hathaway Shares Jump in Early Trading as Repurchase Program Makes Stock Attractive.NEWS3: Berkshire Hathaway Amends Stock Buyback Policy.NEWS4: Berkshire Hathaway Amends Stock Buyback Policy.

Answer: Decrease