What lane did the barbados swimmer compete in before heat 3?
CREATE TABLE table_63121 (
    "Rank" real,
    "Heat" real,
    "Lane" real,
    "Name" text,
    "Nationality" text,
    "Time" text
)
SELECT "Lane" FROM table_63121 WHERE "Heat" < '3' AND "Nationality" = 'barbados'
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 lane did the barbados swimmer compete in before heat 3? ### Input: CREATE TABLE table_63121 (
    "Rank" real,
    "Heat" real,
    "Lane" real,
    "Name" text,
    "Nationality" text,
    "Time" text
) ### Response: SELECT "Lane" FROM table_63121 WHERE "Heat" < '3' AND "Nationality" = 'barbados'