Which round has 4 clubs involved?
CREATE TABLE table_name_51 (
    round VARCHAR,
    clubs_involved VARCHAR
)
SELECT round FROM table_name_51 WHERE clubs_involved = 4
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 round has 4 clubs involved? ### Input: CREATE TABLE table_name_51 (
    round VARCHAR,
    clubs_involved VARCHAR
) ### Response: SELECT round FROM table_name_51 WHERE clubs_involved = 4