What was the circuit had a race on September 20.
CREATE TABLE table_74919 (
    "Race" text,
    "Class(es)" text,
    "Length/Duration" text,
    "Circuit" text,
    "Date" text
)
SELECT "Circuit" FROM table_74919 WHERE "Date" = 'september 20'
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: What was the circuit had a race on September 20. ### Input: CREATE TABLE table_74919 (
    "Race" text,
    "Class(es)" text,
    "Length/Duration" text,
    "Circuit" text,
    "Date" text
) ### Response: SELECT "Circuit" FROM table_74919 WHERE "Date" = 'september 20'