CREATE TABLE table_57798 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

Which home teams had Geelong as the away team?
SELECT "Home team" FROM table_57798 WHERE "Away team" = 'geelong'
SELECT "Home team" FROM "table_57798" WHERE "Away team" = 'geelong'