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 ":".
Later
models
employed
a
torsion
bar
suspension
set
up
.
Later:O
models:O
employed:O
a:O
torsion:O
bar:O
suspension:O
set:O
up:O
.:O