Which deputy prime minister left office in 1981?
CREATE TABLE "list_of_deputy_prime_ministers_of_spain" (
  "deputy_prime_minister" text,
  "took_office" real,
  "left_office" text,
  "prime_minister" text,
  "term" text,
  "party" text
);
SELECT "deputy_prime_minister" FROM "list_of_deputy_prime_ministers_of_spain" WHERE "left_office"='1981';