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

### Instruction:
What's the highest rebs for a pos of pg before 2004?

### Inputs:
table_name: table, columns: ['Player', 'Pos.', 'From', 'School/Country', 'Rebs', 'Asts']

### Response:
SELECT MAX Rebs FROM table WHERE Pos. = pg AND From < 2004