CREATE TABLE table_56658 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What away team played in Lake Oval?
SELECT "Away team" FROM table_56658 WHERE "Venue" = 'lake oval'
SELECT "Away team" FROM "table_56658" WHERE "Venue" = 'lake oval'