user: Question: What is the population density in the Brighton area?
Columns: ['Local Government Area', 'Principal town', 'Land Area (km²)', 'Population 2011 census', 'Density', 'Region']
Types: ['text', 'text', 'text', 'real', 'text', 'text']
Sample row: ["Break O'Day", 'St Helens', '3,525.8', 6194.0, '1.8', 'North-east']
SQL:

assistant: SELECT "Density" FROM "Table" WHERE "Principal town" = 'Brighton';