When ihaia tainui is the incumbent what is the date?
CREATE TABLE table_4142 (
    "By-election" real,
    "Electorate" text,
    "Date" text,
    "Incumbent" text,
    "Reason" text,
    "Winner" text
)
SELECT "Date" FROM table_4142 WHERE "Incumbent" = 'Ihaia Tainui'
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: When ihaia tainui is the incumbent what is the date? ### Input: CREATE TABLE table_4142 (
    "By-election" real,
    "Electorate" text,
    "Date" text,
    "Incumbent" text,
    "Reason" text,
    "Winner" text
) ### Response: SELECT "Date" FROM table_4142 WHERE "Incumbent" = 'Ihaia Tainui'