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
Puerto
Rico
's
most
notable
buildings
,
with
some
considering
it
``
by
far
the
most
easily
recognized
landmark
in
the
Island
.
''
It:O
is:O
one:O
of:O
Puerto:location-GPE
Rico:location-GPE
's:O
most:O
notable:O
buildings:O
,:O
with:O
some:O
considering:O
it:O
``:O
by:O
far:O
the:O
most:O
easily:O
recognized:O
landmark:O
in:O
the:O
Island:O
.:O
'':O