CREATE TABLE table_20769 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Ground" TEXT, "Crowd" FLOAT, "Date" TEXT)

Who was the home team when the away team is Carlton?
SELECT "Home team" FROM table_20769 WHERE "Away team" = 'Carlton'
SELECT "Home team" FROM "table_20769" WHERE "Away team" = 'Carlton'