Question: What is the date of the 1500m freestyle event?
SQL: SELECT "Date" FROM "2-18020762-1" WHERE "Event" = '1500m freestyle';

Question: What is the nationality of the event with a 1:51.51 time?
SQL: SELECT "Nationality" FROM "2-18020762-1" WHERE "Time" = '1:51.51';

Question: What is the time of the 100m freestyle event?
SQL: SELECT "Time" FROM "2-18020762-1" WHERE "Event" = '100m freestyle';

Question: What is the date of the event with a 1:54.00 time?
SQL: SELECT "Date" FROM "2-18020762-1" WHERE "Time" = '1:54.00';

Question: What event is on 18 December 2009?
SQL: SELECT "Event" FROM "2-18020762-1" WHERE "Date" = '18 December 2009';