Who presented their credentials at an unknown date?
CREATE TABLE table_76337 (
    "Name" text,
    "Background" text,
    "Title" text,
    "Appointment" text,
    "Presentation of Credentials" text
)
SELECT "Name" FROM table_76337 WHERE "Presentation of Credentials" = 'unknown'
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: Who presented their credentials at an unknown date? ### Input: CREATE TABLE table_76337 (
    "Name" text,
    "Background" text,
    "Title" text,
    "Appointment" text,
    "Presentation of Credentials" text
) ### Response: SELECT "Name" FROM table_76337 WHERE "Presentation of Credentials" = 'unknown'