user: Question: What is the highest weight of the position Scrum Half?
Columns: ['Player', 'Position', 'Height (m)', 'Weight (Kg)', 'Years']
Types: ['text', 'text', 'real', 'real', 'text']
Sample row: ['Allen Khoury*', 'Full Back', 1.72, 64.0, '3']
SQL:

assistant: SELECT MAX("Weight (Kg)") FROM "Table" WHERE "Position" = 'Scrum Half';