Which event led to a 4-0 record?
CREATE TABLE table_70356 (
    "Res." text,
    "Record" text,
    "Opponent" text,
    "Method" text,
    "Event" text,
    "Round" real,
    "Location" text
)
SELECT "Event" FROM table_70356 WHERE "Record" = '4-0'
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 event led to a 4-0 record? ### Input: CREATE TABLE table_70356 (
    "Res." text,
    "Record" text,
    "Opponent" text,
    "Method" text,
    "Event" text,
    "Round" real,
    "Location" text
) ### Response: SELECT "Event" FROM table_70356 WHERE "Record" = '4-0'