CREATE TABLE "semifinal_2" (
  "rank" real,
  "lane" real,
  "name" text,
  "nationality" text,
  "time" text
);

Question: When is the lane less than 5 and is named ágnes kovács?
SQL: SELECT "time" FROM "semifinal_2" WHERE "lane"<5 AND "name"='ágnes kovács';

Question: What is the average lane for china?
SQL: SELECT AVG("lane") FROM "semifinal_2" WHERE "nationality"='china';

Question: What is the average lane that is called rebecca brown?
SQL: SELECT AVG("lane") FROM "semifinal_2" WHERE "name"='rebecca brown';