user: Question: When the communities name is balmoral and the area is over 43.51 kilometers squared, what's the total population amount?
Columns: ['Official Name', 'Status', 'Area km 2', 'Population', 'Census Ranking']
Types: ['text', 'text', 'real', 'real', 'text']
Sample row: ['Campbellton', 'City', 18.66, 7385.0, '515 of 5,008']
SQL:

assistant: SELECT SUM("Population") FROM "Table" WHERE "Official Name" = 'balmoral' AND "Area km 2" > 43.51;