user: Question: What is the sum of Population (1 July 2005 est.), when Area (km²) is less than 5131, when Population density (per km²) is less than 180, when Subdivisions is Parishes, and when Capital is Roseau?
Columns: ['Name', 'Subdivisions', 'Area (km²)', 'Population (1 July 2005 est.)', 'Population density (per km²)', 'Capital']
Types: ['text', 'text', 'real', 'real', 'real', 'text']
Sample row: ['Antigua and Barbuda', 'Parishes', 440.0, 85632.0, 195.0, "St. John's"]
SQL:

assistant: SELECT SUM("Population (1 July 2005 est.)") FROM "Table" WHERE "Area (km²)" < 5131.0 AND "Population density (per km²)" < 180.0 AND "Subdivisions" = 'Parishes' AND "Capital" = 'Roseau';