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 ":".
Nitrous
oxide
injection
systems
for
automobiles
are
illegal
for
road
use
in
some
countries
.
Nitrous:O
oxide:O
injection:O
systems:O
for:O
automobiles:O
are:O
illegal:O
for:O
road:O
use:O
in:O
some:O
countries:O
.:O