What company built the ship named excellent in 1998?
CREATE TABLE "the_largest_ferries_of_europe" (
  "ship" text,
  "length" text,
  "passengers" real,
  "speed" text,
  "built" real,
  "company" text,
  "registry" text
);
SELECT "company" FROM "the_largest_ferries_of_europe" WHERE "built"=1998 AND "ship"='excellent';