CREATE TABLE table_12020 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What is the away team at lake oval?
SELECT "Away team" FROM table_12020 WHERE "Venue" = 'lake oval'
SELECT "Away team" FROM "table_12020" WHERE "Venue" = 'lake oval'