Which circuit was held on May 7 for 1 hour?
CREATE TABLE table_37437 (
    "Race" text,
    "Length" text,
    "Class" text,
    "Circuit" text,
    "Date" text
)
SELECT "Circuit" FROM table_37437 WHERE "Date" = 'may 7' AND "Length" = '1 hour'
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: Which circuit was held on May 7 for 1 hour? ### Input: CREATE TABLE table_37437 (
    "Race" text,
    "Length" text,
    "Class" text,
    "Circuit" text,
    "Date" text
) ### Response: SELECT "Circuit" FROM table_37437 WHERE "Date" = 'may 7' AND "Length" = '1 hour'