What date was the tournament that had a winner's share of $28,000?
CREATE TABLE table_4947 (
    "Date" text,
    "Tournament" text,
    "Location" text,
    "Winner" text,
    "Score" text,
    "Winner's share ( $ )" text
)
SELECT "Date" FROM table_4947 WHERE "Winner's share ( $ )" = '28,000'
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 date was the tournament that had a winner's share of $28,000? ### Input: CREATE TABLE table_4947 (
    "Date" text,
    "Tournament" text,
    "Location" text,
    "Winner" text,
    "Score" text,
    "Winner's share ( $ )" text
) ### Response: SELECT "Date" FROM table_4947 WHERE "Winner's share ( $ )" = '28,000'