What was the first leg home that had a total aggregate of 3-1?
CREATE TABLE table_name_90 (
    home__1st_leg_ VARCHAR,
    aggregate VARCHAR
)
SELECT home__1st_leg_ FROM table_name_90 WHERE aggregate = "3-1"
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 first leg home that had a total aggregate of 3-1? ### Input: CREATE TABLE table_name_90 (
    home__1st_leg_ VARCHAR,
    aggregate VARCHAR
) ### Response: SELECT home__1st_leg_ FROM table_name_90 WHERE aggregate = "3-1"