Question: What is Date, when Time is "56.49"?
SQL: SELECT "Date" FROM "2-18020762-4" WHERE "Time" = '56.49';

Question: What is Event, when Date is "19 December 2009"?
SQL: SELECT "Event" FROM "2-18020762-4" 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 "2-18020762-4" 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 "2-18020762-4" 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 "2-18020762-4" 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 "2-18020762-4" WHERE "Meet" = 'World Championships' AND "Time" = '20.51';