user: Question: What is the sum of Natural Change, when Natural Change (Per 1000) is greater than 5.4, when Crude Death Rate (Per 1000) is less than 14.3, when Live Births is less than 6950, and when Crude Birth Rate (Per 1000) is less than 28.2?
Columns: ['Average population (x 1000)', 'Live births', 'Deaths', 'Natural change', 'Crude birth rate (per 1000)', 'Crude death rate (per 1000)', 'Natural change (per 1000)']
Types: ['real', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: [233.0, 6559.0, 1938.0, 4621.0, 28.2, 8.3, 19.8]
SQL:

assistant: SELECT SUM("Natural change") FROM "Table" WHERE "Natural change (per 1000)" > 5.4 AND "Crude death rate (per 1000)" < 14.3 AND "Live births" < 6950.0 AND "Crude birth rate (per 1000)" < 28.2;