CREATE TABLE "semifinal_2" (
  "rank" real,
  "lane" real,
  "name" text,
  "nationality" text,
  "time" text
);

Question: What is the highest rank of a swimmer in lane 5?
SQL: SELECT MAX("rank") FROM "semifinal_2" WHERE "lane"=5;

Question: What is the lowest rank of Jens Kruppa in a lane larger than 2?
SQL: SELECT MIN("rank") FROM "semifinal_2" WHERE "name"='jens kruppa' AND "lane">2;

Question: Which nationality has a lane of 6 and a rank smaller than 6?
SQL: SELECT "nationality" FROM "semifinal_2" WHERE "rank"<6 AND "lane"=6;