What are the dates of leaving office for politician from the province of Seville?
CREATE TABLE "elections_to_congress_of_deputies" (
  "election_number" real,
  "election_date" text,
  "district" text,
  "province" text,
  "took_office" text,
  "left_office" text
);
SELECT "left_office" FROM "elections_to_congress_of_deputies" WHERE "province"='Seville';