user: Question: Which COLlege has a Pick # larger than 30, and a Position of OL?
Columns: ['Pick #', 'CFL Team', 'Player', 'Position', 'College']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [25.0, 'Edmonton Eskimos (via Hamilton )', 'Sammy Okpro', 'DB', 'Concordia']
SQL:

assistant: SELECT "College" FROM "Table" WHERE "Pick #" > 30.0 AND "Position" = 'OL';