When did the 4th, Midwest season happen?
CREATE TABLE table_1990460_1 (
    year VARCHAR,
    regular_season VARCHAR
)
SELECT year FROM table_1990460_1 WHERE regular_season = "4th, Midwest"
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 did the 4th, Midwest season happen? ### Input: CREATE TABLE table_1990460_1 (
    year VARCHAR,
    regular_season VARCHAR
) ### Response: SELECT year FROM table_1990460_1 WHERE regular_season = "4th, Midwest"