CREATE TABLE table_47418 ("Tie no" TEXT, "Home team" TEXT, "Score" TEXT, "Away team" TEXT, "Attendance" TEXT)

What was the tie number with the away team of Sheffield Wednesday?
SELECT "Tie no" FROM table_47418 WHERE "Away team" = 'sheffield wednesday'
SELECT "Tie no" FROM "table_47418" WHERE "Away team" = 'sheffield wednesday'