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

### Instruction:
In what Week were there less than 30,348 in Attendance with a Result of W 37-21?

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

### Response:
SELECT SUM Week FROM table WHERE Attendance < 30,348 AND Result = w 37-21