CREATE TABLE table_32024 ("Res." TEXT, "Record" TEXT, "Opponent" TEXT, "Method" TEXT, "Event" TEXT, "Round" FLOAT, "Time" TEXT, "Location" TEXT)

At the UFC 78, what is the average round when the time is 5:00?
SELECT AVG("Round") FROM table_32024 WHERE "Time" = '5:00' AND "Event" = 'ufc 78'
SELECT AVG("Round") FROM "table_32024" WHERE "Event" = 'ufc 78' AND "Time" = '5:00'