With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
It
is
a
private
island
,
but
it
has
recently
been
opened
to
some
visitors
.
It:O
is:O
a:O
private:O
island:O
,:O
but:O
it:O
has:O
recently:O
been:O
opened:O
to:O
some:O
visitors:O
.:O