CREATE TABLE "semifinal_a_b_1" (
  "rank" real,
  "rowers" text,
  "country" text,
  "time" text,
  "notes" text
);

Question: Which country timed at 7:03.91?
SQL: SELECT "country" FROM "semifinal_a_b_1" WHERE "time"='7:03.91';

Question: What did Denmark time at?
SQL: SELECT "time" FROM "semifinal_a_b_1" WHERE "country"='denmark';