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
camera
focuses
on
the
vacuum
cleaner
's
filter
.
The:O
camera:O
focuses:O
on:O
the:O
vacuum:O
cleaner:O
's:O
filter:O
.:O