When was the ship that had a fate of 'converted to laker, 1961; still in service' commissioned?
CREATE TABLE table_53896 (
    "Name" text,
    "Original name" text,
    "Commissioned" text,
    "Final decommission" text,
    "Fate" text
)
SELECT "Commissioned" FROM table_53896 WHERE "Fate" = 'converted to laker, 1961; still in service'
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 was the ship that had a fate of 'converted to laker, 1961; still in service' commissioned? ### Input: CREATE TABLE table_53896 (
    "Name" text,
    "Original name" text,
    "Commissioned" text,
    "Final decommission" text,
    "Fate" text
) ### Response: SELECT "Commissioned" FROM table_53896 WHERE "Fate" = 'converted to laker, 1961; still in service'