What cover has a published date of May 27, 2009 (hc) May 20, 2009 (tpb)?
CREATE TABLE "collections" (
  "volume" text,
  "series" text,
  "title" text,
  "cover" text,
  "published" text,
  "isbn" text
);
SELECT "cover" FROM "collections" WHERE "published"='may 27, 2009 (hc) may 20, 2009 (tpb)';