user: Question: Which is the lowest round to have a pick of 12 and position of Linebacker?
Columns: ['Round', 'Pick #', 'Overall', 'Name', 'Position', 'College']
Types: ['real', 'real', 'real', 'text', 'text', 'text']
Sample row: [2.0, 13.0, 39.0, 'Greg Marx', 'Defensive End', 'Notre Dame']
SQL:

assistant: SELECT MIN("Round") FROM "Table" WHERE "Pick #" = 12.0 AND "Position" = 'Linebacker';