user: Question: What is the total population with a population density less than 29384.8 in San Nicolas?
Columns: ['District', 's Barangay', 'Population (2010 census)', 'Area ( has .)', 'Pop. density (per km2)']
Types: ['text', 'real', 'real', 'real', 'real']
Sample row: ['Binondo', 10.0, 12985.0, 66.11, 19641.5]
SQL:

assistant: SELECT SUM("Population (2010 census)") FROM "Table" WHERE "Pop. density (per km2)" < 29384.8 AND "District" = 'San Nicolas';