What was the Proposed date of the entry that has a CERCLIS ID of al0001058056?
CREATE TABLE table_55866 (
    "CERCLIS ID" text,
    "Name" text,
    "County" text,
    "Proposed" text,
    "Listed" text,
    "Construction completed" text,
    "Partially deleted" text,
    "Deleted" text
)
SELECT "Proposed" FROM table_55866 WHERE "CERCLIS ID" = 'al0001058056'
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 was the Proposed date of the entry that has a CERCLIS ID of al0001058056? ### Input: CREATE TABLE table_55866 (
    "CERCLIS ID" text,
    "Name" text,
    "County" text,
    "Proposed" text,
    "Listed" text,
    "Construction completed" text,
    "Partially deleted" text,
    "Deleted" text
) ### Response: SELECT "Proposed" FROM table_55866 WHERE "CERCLIS ID" = 'al0001058056'