Belfast castle / new / the Millennium Stadium
Belfast Castle isn't as new as the Millennium Stadium
the Millennium Stadium / modern / the Millennium Centre
the Millennium Stadium isn't as modern as the Millennium Centre
Belfast / long / London
Belfast isn't as big as London
the Royal Mile / long / Princess street
the Royal Mile is as long as Princess street
Buckingham Palace / old / the Tower of London
Buckingham Palace isn't as big as the Tower of London