What is the year when the spoksperson is Ruslana?
CREATE TABLE "commentators_and_spokespersons" (
  "year_s" real,
  "television_commentator" text,
  "dual_television_commentator" text,
  "radio_commentator" text,
  "spokesperson" text
);
SELECT MIN("year_s") FROM "commentators_and_spokespersons" WHERE "spokesperson"='Ruslana';