Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Tell me the sum of attendane for a result of w 12-3 and week more than 12

### Inputs:
table_name: table, columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']

### Response:
SELECT SUM Attendance FROM table WHERE Result = w 12-3 AND Week > 12