CREATE TABLE table_75573 ("Res." TEXT, "Record" TEXT, "Opponent" TEXT, "Method" TEXT, "Event" TEXT, "Round" FLOAT, "Time" TEXT, "Location" TEXT)

What is the location of the match with an event of ecc 8: comeback?
SELECT "Location" FROM table_75573 WHERE "Event" = 'ecc 8: comeback'
SELECT "Location" FROM "table_75573" WHERE "Event" = 'ecc 8: comeback'