user: Question: How much Attendance has a Result of 2–4, and a Visitor of Brynäs IF?
Columns: ['Round', 'Date', 'Home', 'Result', 'Visitor', 'Venue', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: [7.0, 'Thursday, October 2', 'Rögle BK', '4–1', 'Södertälje SK', 'Lindab Arena', 4008.0]
SQL:

assistant: SELECT SUM("Attendance") FROM "Table" WHERE "Result" = '2–4' AND "Visitor" = 'Brynäs IF';