CREATE TABLE "men" (
  "event" text,
  "time" text,
  "nationality" text,
  "date" text,
  "meet" text,
  "location" text
);

Question: What is Date, when Time is "56.49"?
SQL: SELECT "date" FROM "men" WHERE "time"='56.49';

Question: What is Event, when Date is "19 December 2009"?
SQL: SELECT "event" FROM "men" WHERE "date"='19 december 2009';

Question: What is Time, when Meet is "Duel in the Pool", and when Date is "19 December 2009"?
SQL: SELECT "time" FROM "men" WHERE "meet"='duel in the pool' AND "date"='19 december 2009';

Question: What is the Location, when Event is "100m Butterfly"?
SQL: SELECT "location" FROM "men" WHERE "event"='100m butterfly';

Question: What is Date, when Meet is "World Championships", when Nationality is "United States", and when Time is "1:46.68"?
SQL: SELECT "date" FROM "men" WHERE "meet"='world championships' AND "nationality"='united states' AND "time"='1:46.68';

Question: What is Event, when Meet is "World Championships", and when Time is "20.51"?
SQL: SELECT "event" FROM "men" WHERE "meet"='world championships' AND "time"='20.51';