CREATE TABLE "semifinals" (
  "heat" real,
  "lane" real,
  "name" text,
  "country" text,
  "mark" text
);

Question: What is the most lanes used that had a winner from Ireland?
SQL: SELECT MAX("lane") FROM "semifinals" WHERE "country"='ireland';

Question: What is the total number of lanes used for races with winners from Austria?
SQL: SELECT COUNT("lane") FROM "semifinals" WHERE "country"='austria';

Question: What is the most lanes used in races with more than 1 heat and a winning mark of 7.25?
SQL: SELECT MAX("lane") FROM "semifinals" WHERE "heat">1 AND "mark"='7.25';

Question: What is the mark set by Laura Turner?
SQL: SELECT "mark" FROM "semifinals" WHERE "name"='laura turner';