user: Question: What was the average attendance when the record was 19-13?
Columns: ['Date', 'Opponent', 'Score', 'Loss', 'Attendance', 'Record']
Types: ['text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['May 1', '@ Rangers', '3 - 0', 'Key (4-1)', 33439.0, '12-10']
SQL:

assistant: SELECT AVG("Attendance") FROM "Table" WHERE "Record" = '19-13';