user: Question: What was round 7's lowest overall?
Columns: ['Round', 'Overall', 'Player', 'Position', 'School/Club Team']
Types: ['real', 'real', 'text', 'text', 'text']
Sample row: [2.0, 17.0, 'Jim Garcia', 'Tackle', 'Purdue']
SQL:

assistant: SELECT MIN("Overall") FROM "Table" WHERE "Round" = 7.0;