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:2019-05-22, Stock:BRK-A, The news for the past five days is as follows:
2019-05-15: NEWS1: Is Berkshire Hathaway Stock the Perfect Name to Buy Amid the Chaos?.NEWS2: Is Berkshire Hathaway Stock the Perfect Name to Buy Amid the Chaos?.
2019-05-16: NEWS1: Should You Get into Berkshire Hathaway Stock in May?.NEWS2: Should You Get into Berkshire Hathaway Stock in May?.
2019-05-17: NEWS1: Amazon Stock Looks More and More Bulletproof Every Day.NEWS2: Amazon Stock Looks More and More Bulletproof Every Day.NEWS3: Friday’s Vital Data: Cisco, Amazon and Boeing.NEWS4: Friday’s Vital Data: Cisco, Amazon and Boeing.
2019-05-20: nan
2019-05-21: nan

Answer: Decrease