Table: swimming_records
Columns: event
time
nationality
date
meet
location

Question: What is the date of the 1500m freestyle event?
SQL: SELECT "date" FROM swimming_records WHERE "event" = '1500m freestyle'

Question: What is the nationality of the event with a 1:51.51 time?
SQL: SELECT "nationality" FROM swimming_records WHERE "time" = '1:51.51'

Question: What is the time of the 100m freestyle event?
SQL: SELECT "time" FROM swimming_records WHERE "event" = '100m freestyle'

Question: What is the date of the event with a 1:54.00 time?
SQL: SELECT "date" FROM swimming_records WHERE "time" = '1:54.00'

Question: What event is on 18 December 2009?
SQL: SELECT "event" FROM swimming_records WHERE "date" = '18 december 2009'