CREATE TABLE table_33517 ("Event" CLOB, "Time" CLOB, "Nationality" CLOB, "Date" CLOB, "Meet" CLOB, "Location" CLOB)

Which championship was the 100m backstroke performed?
SELECT "Meet" FROM table_33517 WHERE "Event" = '100m backstroke'
SELECT "Meet" FROM "table_33517" WHERE "Event" = '100m backstroke'