Tell me the date for dinah pfizenmaier anna zaja and winner
CREATE TABLE table_4426 (
    "Outcome" text,
    "Date" text,
    "Tournament" text,
    "Surface" text,
    "Partner" text,
    "Opponents" text,
    "Score" text
)
SELECT "Date" FROM table_4426 WHERE "Outcome" = 'winner' AND "Opponents" = 'dinah pfizenmaier anna zaja'
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: Tell me the date for dinah pfizenmaier anna zaja and winner ### Input: CREATE TABLE table_4426 (
    "Outcome" text,
    "Date" text,
    "Tournament" text,
    "Surface" text,
    "Partner" text,
    "Opponents" text,
    "Score" text
) ### Response: SELECT "Date" FROM table_4426 WHERE "Outcome" = 'winner' AND "Opponents" = 'dinah pfizenmaier anna zaja'