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 ":".
Nature
on
the
island
is
mostly
left
untouched
since
the
1960s
,
where
the
island
was
used
to
ship
out
agricultural
products
.
Nature:O
on:O
the:O
island:O
is:O
mostly:O
left:O
untouched:O
since:O
the:O
1960s:O
,:O
where:O
the:O
island:O
was:O
used:O
to:O
ship:O
out:O
agricultural:O
products:O
.:O