What is Since, when Transfer Fee is ' 12m'?
CREATE TABLE table_47656 (
    "Nat." text,
    "Name" text,
    "Since" text,
    "Goals" real,
    "Ends" text,
    "Transfer fee" text
)
SELECT "Since" FROM table_47656 WHERE "Transfer fee" = '£ 12m'
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 is Since, when Transfer Fee is ' 12m'? ### Input: CREATE TABLE table_47656 (
    "Nat." text,
    "Name" text,
    "Since" text,
    "Goals" real,
    "Ends" text,
    "Transfer fee" text
) ### Response: SELECT "Since" FROM table_47656 WHERE "Transfer fee" = '£ 12m'