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
barrel
of
the
4-pounder
weighed
or
150
times
the
projectile
weight
.
The:O
barrel:O
of:O
the:O
4-pounder:O
weighed:O
or:O
150:O
times:O
the:O
projectile:O
weight:O
.:O