user: Question: what is the lowest overall when the pick is 20?
Columns: ['Round', 'Pick', 'Overall', 'Name', 'Position', 'College']
Types: ['real', 'real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 17.0, 17.0, 'Kenard Lang', 'DE', 'Miami (FL)']
SQL:

assistant: SELECT MIN("Overall") FROM "Table" WHERE "Pick" = 20.0;