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:2018-02-01, Stock:BRK-A, The news for the past five days is as follows:
2018-01-25: nan
2018-01-26: NEWS1: Southwest Airlines Co May Be Down, But Is It Out?.NEWS2: Southwest Airlines Co May Be Down, But Is It Out?.
2018-01-29: nan
2018-01-30: NEWS1: Healthcare News: Amazon, Berkshire Hathaway, JPMorgan Team Up to Reduce Costs for Employees.NEWS2: Healthcare News: Amazon, Berkshire Hathaway, JPMorgan Team Up to Reduce Costs for Employees.NEWS3: Amazon is Building Its Own Healthcare Company, With the Help of Berkshire & JPMorgan.NEWS4: Amazon is Building Its Own Healthcare Company, With the Help of Berkshire & JPMorgan.NEWS5: UnitedHealth Group Inc Stock Is Already Set for a Comeback.NEWS6: UnitedHealth Group Inc Stock Is Already Set for a Comeback.NEWS7: Street Color: JPMorgan, Amazon, Berkshire Healthcare Partnership Poses Limited Disintermediary Risk, Citi Says.NEWS8: Street Color: JPMorgan, Amazon, Berkshire Healthcare Partnership Poses Limited Disintermediary Risk, Citi Says.NEWS9: Buffett, Bezos and Dimon to form a health care company.NEWS10: Buffett, Bezos and Dimon to form a health care company.NEWS11: Street Color: Amazon, Berkshire, JPM Healthcare Partnership Unlikely To Displace Established Players, RBC Says.NEWS12: Street Color: Amazon, Berkshire, JPM Healthcare Partnership Unlikely To Displace Established Players, RBC Says.
2018-01-31: NEWS1: What To Make Of The Amazon, Berkshire Hathaway and JP Morgan Healthcare Company.NEWS2: What To Make Of The Amazon, Berkshire Hathaway and JP Morgan Healthcare Company.

Answer: Rise