Which father had william iv as a husband?
CREATE TABLE table_6077 (
    "Image" text,
    "Father" text,
    "Birth" text,
    "Ceased to be Duchess" text,
    "Death" text,
    "Husband" text
)
SELECT "Father" FROM table_6077 WHERE "Husband" = 'william iv'
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: Which father had william iv as a husband? ### Input: CREATE TABLE table_6077 (
    "Image" text,
    "Father" text,
    "Birth" text,
    "Ceased to be Duchess" text,
    "Death" text,
    "Husband" text
) ### Response: SELECT "Father" FROM table_6077 WHERE "Husband" = 'william iv'