With no explanation, label each line with "location-GPE", "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Naples
'
historic
city
centre
is
the
largest
in
Europe
and
has
been
designated
as
a
UNESCO
World
Heritage
Site
.
Naples:location-GPE
':O
historic:O
city:O
centre:O
is:O
the:O
largest:O
in:O
Europe:location-GPE
and:O
has:O
been:O
designated:O
as:O
a:O
UNESCO:organization-other
World:O
Heritage:O
Site:O
.:O