user: Question: What is the area in km2 for Dufferin? 
Columns: ['Official Name', 'Status', 'Area km 2', 'Population', 'Census Ranking']
Types: ['text', 'text', 'text', 'real', 'text']
Sample row: ['Saint George', 'Parish', '499.51', 2476.0, '1,146 of 5,008']
SQL:

assistant: SELECT "Area km 2" FROM "Table" WHERE "Official Name" = 'Dufferin';