what is the premier when the rank is 30?
CREATE TABLE "rank_by_time_in_office" (
  "rank" real,
  "premier" text,
  "party" text,
  "assumed_office" text,
  "left_office" text,
  "total_time_in_office" text
);
SELECT "premier" FROM "rank_by_time_in_office" WHERE "rank"=30;