CREATE TABLE "heat_3" (
  "rank" real,
  "rowers" text,
  "country" text,
  "time" text,
  "notes" text
);

Question: Who were the rowers who had a time of 7:39.70?
SQL: SELECT "rowers" FROM "heat_3" WHERE "time"='7:39.70';

Question: Who were the rowers from china wh had a rank smaller than 4?
SQL: SELECT "rowers" FROM "heat_3" WHERE "rank"<4 AND "country"='china';

Question: What is the notes for the rowers from denmark?
SQL: SELECT "notes" FROM "heat_3" WHERE "country"='denmark';