user: Question: What's the highest rebs for a pos of pg before 2004?
Columns: ['Player', 'Pos.', 'From', 'School/Country', 'Rebs', 'Asts']
Types: ['text', 'text', 'real', 'text', 'real', 'real']
Sample row: ['James Edwards Category:Articles with hCards', 'C', 1983.0, 'Washington', 1490.0, 530.0]
SQL:

assistant: SELECT MAX("Rebs") FROM "Table" WHERE "Pos." = 'pg' AND "From" < 2004.0;