What is the draw number of the Artist Dav Mcnamara and a place bigger than 4?
CREATE TABLE "national_final_14_march_1993" (
  "draw" real,
  "artist" text,
  "song" text,
  "points" real,
  "place" real
);
SELECT COUNT("draw") FROM "national_final_14_march_1993" WHERE "artist"='dav mcnamara' AND "place">4;