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

Question: What is the top rank with a time of 2:19.86?
SQL: SELECT MAX("rank") FROM "heats" WHERE "time"='2:19.86';

Question: Who had a lane number smaller than 7 and a time of 2:19.86?
SQL: SELECT "name" FROM "heats" WHERE "lane"<7 AND "time"='2:19.86';

Question: What was Liu Limin's time in heat 4?
SQL: SELECT "time" FROM "heats" WHERE "heat"=4 AND "name"='liu limin';