CREATE TABLE table_74761 ("Event" CLOB, "Time" CLOB, "Nationality" CLOB, "Date" CLOB, "Meet" CLOB, "Location" CLOB)

Where were the 2008 championships with a time of 7:56.90 held?
SELECT "Location" FROM table_74761 WHERE "Meet" = '2008 championships' AND "Time" = '7:56.90'
SELECT "Location" FROM "table_74761" WHERE "Meet" = '2008 championships' AND "Time" = '7:56.90'