CREATE TABLE table_42845 ("Date" TEXT, "Home team" TEXT, "Score" TEXT, "Away team" TEXT, "Venue" TEXT, "Competition" TEXT)

Who is the away team for the tome team Leeds United, at the League Cup Competition?
SELECT "Away team" FROM table_42845 WHERE "Home team" = 'leeds united' AND "Competition" = 'league cup'
SELECT "Away team" FROM "table_42845" WHERE "Competition" = 'league cup' AND "Home team" = 'leeds united'