Who is the writer of Wallace & Gromit: A Close Shave, a short film from before 2008?
CREATE TABLE "film" (
  "year" real,
  "title" text,
  "director" text,
  "writer" text,
  "notes" text
);
SELECT "writer" FROM "film" WHERE "year"<2008 AND "notes"='short film' AND "title"='wallace & gromit: a close shave';