With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
is
one
of
the
best
preserved
brochs
in
Orkney
.
It:O
is:O
one:O
of:O
the:O
best:O
preserved:O
brochs:O
in:O
Orkney:location-GPE
.:O