How many Oscars did the Lord of the Rings film 'The Return of the King' win?

Explanation

The Lord of the Rings films are based on the J.R.R Tolkien books 'The Fellowship of the Ring, 'The Two Towers' and 'The Return of the King'. The story takes place in Middle Earth, where the good fight the evil over the Ring. The main characters are the hobbits Frodo and Sam, the wizard Gandalf, the elves Elrond and Legolas, Aragorn, the dwarf Gimli and Gollum. The third Lord of the Rings film won 11 Oscars.