Which chromosomes have an unknown property?
CREATE TABLE table_4258 (
    "Name" text,
    "Family name" text,
    "Receptor" text,
    "Coreceptor" text,
    "Property" text,
    "Chromosomal location" text
)
SELECT "Name" FROM table_4258 WHERE "Property" = '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: Which chromosomes have an unknown property? ### Input: CREATE TABLE table_4258 (
    "Name" text,
    "Family name" text,
    "Receptor" text,
    "Coreceptor" text,
    "Property" text,
    "Chromosomal location" text
) ### Response: SELECT "Name" FROM table_4258 WHERE "Property" = 'Unknown'