Which part number was used for the Atom Z500 processor?
CREATE TABLE table_50821 (
    "Model number" text,
    "sSpec number" text,
    "Frequency" text,
    "L2 cache" text,
    "Mult." text,
    "Voltage" text,
    "Socket" text,
    "Release date" text,
    "Part number(s)" text,
    "Release price ( USD )" text
)
SELECT "Part number(s)" FROM table_50821 WHERE "Model number" = 'atom z500'
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 part number was used for the Atom Z500 processor? ### Input: CREATE TABLE table_50821 (
    "Model number" text,
    "sSpec number" text,
    "Frequency" text,
    "L2 cache" text,
    "Mult." text,
    "Voltage" text,
    "Socket" text,
    "Release date" text,
    "Part number(s)" text,
    "Release price ( USD )" text
) ### Response: SELECT "Part number(s)" FROM table_50821 WHERE "Model number" = 'atom z500'