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

Question: What nationality has a lane less than 6, with 1 as the rank?
SQL: SELECT "nationality" FROM "semifinal_2" WHERE "lane"<6 AND "rank"=1;

Question: What time has a lane less than 5, with Poland as the nationality?
SQL: SELECT "time" FROM "semifinal_2" WHERE "lane"<5 AND "nationality"='poland';

Question: How many lanes have 1:53.70 as the time?
SQL: SELECT COUNT("lane") FROM "semifinal_2" WHERE "time"='1:53.70';

Question: How many ranks have chen yin as the name, with a lane greater than 8?
SQL: SELECT SUM("rank") FROM "semifinal_2" WHERE "name"='chen yin' AND "lane">8;

Question: What nationality has 1:55.35 as the time?
SQL: SELECT "nationality" FROM "semifinal_2" WHERE "time"='1:55.35';

Question: How many lanes have a rank greater than 8?
SQL: SELECT SUM("lane") FROM "semifinal_2" WHERE "rank">8;