What was the Date of the Cimmeria Issue for which the Penciller was Tomás Giorello?
CREATE TABLE "conan_dark_horse_comics" (
  "issue" text,
  "date" text,
  "title" text,
  "penciller" text,
  "color" text
);
SELECT "date" FROM "conan_dark_horse_comics" WHERE "penciller"='tomás giorello' AND "title"='cimmeria';