user: Question: What is the average attendance that has April 12 as the date?
Columns: ['Date', 'Opponent', 'Score', 'Loss', 'Attendance', 'Record']
Types: ['text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['April 8', 'Phillies', '7 - 6 11', 'Lersch (0-1)', 40796.0, '1-0']
SQL:

assistant: SELECT AVG("Attendance") FROM "Table" WHERE "Date" = 'April 12';