What is the nationality of the swimmer with a rank over 2 with a time of 55.77?
CREATE TABLE "heats" (
  "rank" real,
  "heat" real,
  "lane" real,
  "name" text,
  "nationality" text,
  "time" text
);
SELECT "nationality" FROM "heats" WHERE "rank">2 AND "time"='55.77';