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 ":".
D.
and
D.
Sc
.
D.:O
and:O
D.:O
Sc:O
.:O