CREATE TABLE table_10767 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

Who played as the away team when Essendon was the home team?
SELECT "Away team" FROM table_10767 WHERE "Home team" = 'essendon'
SELECT "Away team" FROM "table_10767" WHERE "Home team" = 'essendon'