With no explanation, label each line with "O", "location-island", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
has
been
described
as
a
``
masterpiece
''
and
``
without
a
doubt
,
the
finest
example
of
Easter
Island
sculpture
''
.
It:O
has:O
been:O
described:O
as:O
a:O
``:O
masterpiece:O
'':O
and:O
``:O
without:O
a:O
doubt:O
,:O
the:O
finest:O
example:O
of:O
Easter:location-island
Island:location-island
sculpture:O
'':O
.:O