user: Question: What is the total attendance on april 25?
Columns: ['Date', 'Visitor', 'Score', 'Home', 'Decision', 'Attendance', 'Series']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['April 15', 'Philadelphia', '1 – 4', 'Pittsburgh', 'Biron', 17132.0, 'Penguins lead 1–0']
SQL:

assistant: SELECT SUM("Attendance") FROM "Table" WHERE "Date" = 'april 25';