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 ":".
The
pistol
also
featured
grooved
finger
grips
and
left
sided
combined
slide
lock/safety
behind
the
trigger
guard
.
The:O
pistol:O
also:O
featured:O
grooved:O
finger:O
grips:O
and:O
left:O
sided:O
combined:O
slide:O
lock/safety:O
behind:O
the:O
trigger:O
guard:O
.:O