When 318676 is the population of 2010 and 1st class is the income classification what is the area in kilometers squared?
CREATE TABLE table_29289372_1 (
    area__km²_ VARCHAR,
    income_classification VARCHAR,
    population__2010_ VARCHAR
)
SELECT area__km²_ FROM table_29289372_1 WHERE income_classification = "1st Class" AND population__2010_ = 318676
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: When 318676 is the population of 2010 and 1st class is the income classification what is the area in kilometers squared? ### Input: CREATE TABLE table_29289372_1 (
    area__km²_ VARCHAR,
    income_classification VARCHAR,
    population__2010_ VARCHAR
) ### Response: SELECT area__km²_ FROM table_29289372_1 WHERE income_classification = "1st Class" AND population__2010_ = 318676