CREATE TABLE table_name_89 (release_date VARCHAR2, part_number_s_ VARCHAR2)

What date was part number rk80533pz933256 released?
SELECT release_date FROM table_name_89 WHERE part_number_s_ = "rk80533pz933256"
SELECT "release_date" FROM "table_name_89" WHERE "part_number_s_" = "rk80533pz933256"