user: Question: What was the highest weight in kg For F Position, Jersey #12?
Columns: ['Position', 'Jersey #', 'Name', 'Height (cm)', 'Weight (kg)', 'Birthdate', 'Birthplace', '2002–2003 Team', 'NHL rights, if any']
Types: ['text', 'real', 'text', 'real', 'real', 'text', 'text', 'text', 'text']
Sample row: ['G', 29.0, 'Bob Goepfert', 178.0, 77.0, 'May 9, 1983', 'Kings Park, New York', 'Providence College', 'Pittsburgh Penguins']
SQL:

assistant: SELECT MAX("Weight (kg)") FROM "Table" WHERE "Position" = 'F' AND "Jersey #" = 12.0;