What name was listed 02/21/1990, and a CERCLIS ID of scd980844005?
CREATE TABLE "superfund_sites" (
  "cerclis_id" text,
  "name" text,
  "county" text,
  "proposed" text,
  "listed" text
);
SELECT "name" FROM "superfund_sites" WHERE "listed"='02/21/1990' AND "cerclis_id"='scd980844005';