user: Question: If the headquarters is Bharatpur, what is the maximum area?
Columns: ['District', 'Headquarters', 'Area (km²)', 'Population (2011)', 'Division']
Types: ['text', 'text', 'real', 'real', 'text']
Sample row: ['Ajmer', 'Ajmer', 8481.0, 2584913.0, 'Ajmer']
SQL:

assistant: SELECT MAX("Area (km²)") FROM "Table" WHERE "Headquarters" = 'Bharatpur';