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 ":".
179
civilians
were
killed
and
484
seriously
injured
.
179:O
civilians:O
were:O
killed:O
and:O
484:O
seriously:O
injured:O
.:O