With no explanation, label each line with "O", "product-weapon", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
was
outfitted
with
armor
plating
and
two
guns
:
a
32-pound
Parrott
rifle
and
a
42-pound
banded
rifle
gun
.
It:O
was:O
outfitted:O
with:O
armor:O
plating:O
and:O
two:O
guns:O
::O
a:O
32-pound:O
Parrott:product-weapon
rifle:product-weapon
and:O
a:O
42-pound:O
banded:O
rifle:O
gun:O
.:O