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

Question: What was the highest heat with a time slower than 48.87 from sweden?
SQL: SELECT MAX("heat") FROM "semifinals" WHERE "time">48.87 AND "nationality"='sweden';

Question: How many lanes featured a swimmer ranked above 4, in a heat later than 1, from australia, named ashley callus?
SQL: SELECT COUNT("lane") FROM "semifinals" WHERE "rank">4 AND "heat">1 AND "nationality"='australia' AND "name"='ashley callus';