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 ":".
This
was
later
changed
on
the
614
to
a
blood
orange
window
stripe
on
a
gravel
grey
background
.
This:O
was:O
later:O
changed:O
on:O
the:O
614:O
to:O
a:O
blood:O
orange:O
window:O
stripe:O
on:O
a:O
gravel:O
grey:O
background:O
.:O