What is the submission Year of the Film The Dark Side of the Moon directed by Erik Clausen?
CREATE TABLE "submissions" (
  "year" real,
  "english_title" text,
  "danish_title" text,
  "director" text,
  "result" text
);
SELECT SUM("year") FROM "submissions" WHERE "director"='erik clausen' AND "english_title"='the dark side of the moon';