What was the first leg home that had a total aggregate of 3-1?
CREATE TABLE table_12740 (
    "Home (1st leg)" text,
    "Home (2nd leg)" text,
    "1st Leg" text,
    "2nd leg" text,
    "Aggregate" text
)
SELECT "Home (1st leg)" FROM table_12740 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_12740 (
    "Home (1st leg)" text,
    "Home (2nd leg)" text,
    "1st Leg" text,
    "2nd leg" text,
    "Aggregate" text
) ### Response: SELECT "Home (1st leg)" FROM table_12740 WHERE "Aggregate" = '3-1'