user: Question: What college has a pick greater than 4 and an overall of 21?
Columns: ['Round', 'Pick', 'Overall', 'Name', 'Position', 'College']
Types: ['real', 'real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 4.0, 4.0, 'Richie Lucas', 'QB', 'Penn State']
SQL:

assistant: SELECT "College" FROM "Table" WHERE "Pick" > 4.0 AND "Overall" = 21.0;