CREATE TABLE table_4942 ("Rank" TEXT, "Name" TEXT, "Height m / feet" TEXT, "Floors" TEXT, "Notes" TEXT)

What's the rank for Daewoo Business Center when the notes are cancelled?
SELECT "Rank" FROM table_4942 WHERE "Notes" = 'cancelled' AND "Name" = 'daewoo business center'
SELECT "Rank" FROM "table_4942" WHERE "Name" = 'daewoo business center' AND "Notes" = 'cancelled'