Find the total population of the top 3 districts with the largest area.
CREATE TABLE district (
    city_population INTEGER,
    city_area VARCHAR
)
SELECT SUM(city_population) FROM district ORDER BY city_area DESC LIMIT 3
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: Find the total population of the top 3 districts with the largest area. ### Input: CREATE TABLE district (
    city_population INTEGER,
    city_area VARCHAR
) ### Response: SELECT SUM(city_population) FROM district ORDER BY city_area DESC LIMIT 3