Name the lowest Time of jamaica with a Lane larger than 4 and a Rank smaller than 1?
CREATE TABLE "heat_2" (
  "rank" real,
  "lane" real,
  "name" text,
  "nationality" text,
  "time" real
);
SELECT MIN("time") FROM "heat_2" WHERE "nationality"='jamaica' AND "lane">4 AND "rank"<1;